WSA Browser

Glossary of WSA attributes

This Glossary alphabetically lists all attributes used in the UKIDSSDR10 database(s) held in the WSA. If you would like to have more information about the schema tables please use the UKIDSSDR10 Schema Browser (other Browser versions).

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

W

Name Schema Table Database Description Type Length Unit Default Value Unified Content Descriptor

w1ba wise_allskysc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W1. real 4 arcsec -0.9999995e9

w1ba wise_prelimsc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W1 real 4 arcsec -0.9999995e9

w1cc_map wise_allskysc WISE Contamination and confusion map for this source in W1.
This column contains the integer equivalent of the 9-bit binary number that specifies if the W1 measurement is believed to be contaminated by or a spurious detection of an image artifact. smallint 2

w1cc_map wise_prelimsc WISE Contamination and confusion map for this source in W1
This column contains the integer equivalent of the 9-bit binary number that specifies if the W1 measurement is believed to be contaminated by or a spurious detection of an image artifact smallint 2

w1cc_map_str wise_allskysc WISE Contamination and confusion string in W1.
This column is a character string that denotes all artifacts that may contaminate the W1 measurement of this source, in the priority order D,P,H,O,d,p,h,o. char 9

w1cc_map_str wise_prelimsc WISE Contamination and confusion string in W1
This column is a character string that denotes all artifacts that may contaminate the W1 measurement of this source, in the priority order D,P,H,O char 9

w1conf wise_allskysc WISE Estimated confusion noise in the W1 sky background annulus, in digital numbers.
This number is the difference between the measured noise in the sky background w1sigsk and the noise measured in the same region on the Atlas Uncertainty Maps. float 8 ADU -0.9999995e9

w1conf wise_prelimsc WISE Estimated confusion noise in the W1 sky background annulus, in digital numbers
This number is the difference between the measured noise in the sky background w1sigsk and the noise measured in the same region on the Atlas Uncertainty Maps float 8 ADU -0.9999995e9

w1cov wise_allskysc WISE Mean pixel coverage in W1.
This column gives the mean pixel value from the W1 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 8.25" centered on the position of this source. real 4 -0.9999995e9

w1cov wise_prelimsc WISE Mean pixel coverage in W1
This column gives the mean pixel value from the W1 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 8.25" centered on the position of this source. real 4 -0.9999995e9

w1dmag wise_allskysc WISE Difference between maximum and minimum magnitude of the source from all usable single-exposure frames, W1.
Single-exposure measurements with w1rchi2 values greater than 3.0 times the median are rejected from this computation. real 4 mag -0.9999995e9

w1flg wise_allskysc WISE W1 "standard" aperture measurement quality flag.
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. smallint 2 -9999

w1flg wise_prelimsc WISE W1 "standard" aperture measurement quality flag
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit smallint 2 -9999

w1flg_1 wise_allskysc WISE W1 5.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_1 wise_prelimsc WISE W1 5.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_2 wise_allskysc WISE W1 8.25" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_2 wise_prelimsc WISE W1 8.25" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_3 wise_allskysc WISE W1 11.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_3 wise_prelimsc WISE W1 11.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_4 wise_allskysc WISE W1 13.75" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_4 wise_prelimsc WISE W1 13.75" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_5 wise_allskysc WISE W1 16.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_5 wise_prelimsc WISE W1 16.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_6 wise_allskysc WISE W1 19.25" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_6 wise_prelimsc WISE W1 19.25" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_7 wise_allskysc WISE W1 22.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_7 wise_prelimsc WISE W1 22.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flg_8 wise_allskysc WISE W1 24.75" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w1flg_8 wise_prelimsc WISE W1 24.75" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w1flux wise_allskysc WISE The "raw" W1 source flux measured in profile-fit photometry in units of digital numbers.
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w1flux wise_prelimsc WISE The "raw" W1 source flux measured in profile-fit photometry in units of digital numbers
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w1frl wise_prelimsc WISE Fraction of W1 pixels affected by latents
This column gives the fraction of all W1 pixels in the stack of individual W1 exposures used to characterize this source that may be affected by the presence of a latent image produced by a bright source real 4 -0.9999995e9

w1frtr wise_allskysc WISE Fraction of W1 pixels affected by transients.
This column gives the fraction of all W1 pixels in the stack of individual W1 exposures used to characterize this source that may be affected by transient events. This number is computed by counting the number of pixels in the single exposure Bit Mask images with value "21" that are present within the profile-fitting area, a circular region with radius of 7.25", centered on the position of this source, and dividing by the total number of pixels in the same area that are available for measurement. real 4 -0.9999995e9

w1gerr wise_allskysc WISE Uncertainty in the W1 magnitude of source measured in elliptical aperture. real 4 mag -0.9999995e9

w1gerr wise_prelimsc WISE Uncertainty in the W1 magnitude of source measured in elliptical aperture real 4 mag -0.9999995e9

w1gflg wise_allskysc WISE W1 elliptical aperture measurement quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag, w1mflg. smallint 2 -9999

w1gflg wise_prelimsc WISE W1 elliptical aperture measurement quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag smallint 2 -9999

w1gmag wise_allskysc WISE W1 magnitude of source measured in the elliptical aperture described by w1rsemi, w1ba, and w1pa. real 4 mag -0.9999995e9

w1gmag wise_prelimsc WISE W1 magnitude of source measured in the elliptical aperture described by w1rsemi, w1ba, and w1pa real 4 mag -0.9999995e9

w1m wise_allskysc WISE Integer frame coverage in W1.
This column gives the number of individual 7.7s W1 exposures on which a profile-fit measurement of this source was possible. bigint 8 -99999999

w1m wise_prelimsc WISE Integer frame coverage in W1
This column gives the number of individual 7.7s W1 exposures on which a profile-fit measurement of this source was possible bigint 8 -99999999

w1mag wise_allskysc WISE W1 "standard" aperture magnitude.
This is the curve-of-growth corrected source brightness measured in an 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. real 4 mag -0.9999995e9

w1mag wise_prelimsc WISE W1 "standard" aperture magnitude
This is the curve-of-growth corrected source brightness measured in an 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness real 4 mag -0.9999995e9

w1mag_1 wise_allskysc WISE W1 5.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 5.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_1 wise_prelimsc WISE W1 5.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_2 wise_allskysc WISE W1 8.25" radius aperture magnitude.
This is the calibrated source brightness measured in a 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_2 wise_prelimsc WISE W1 8.25" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_3 wise_allskysc WISE W1 11.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 11.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_3 wise_prelimsc WISE W1 11.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_4 wise_allskysc WISE W1 13.75" radius aperture magnitude.
This is the calibrated source brightness measured in a 13.75" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_4 wise_prelimsc WISE W1 13.75" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_5 wise_allskysc WISE W1 16.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 16.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_5 wise_prelimsc WISE W1 16.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_6 wise_allskysc WISE W1 19.25" radius aperture magnitude.
This is the calibrated source brightness measured in a 19.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_6 wise_prelimsc WISE W1 19.25" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_7 wise_allskysc WISE W1 22.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 22.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_7 wise_prelimsc WISE W1 22.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1mag_8 wise_allskysc WISE W1 24.75" radius aperture magnitude.
This is the calibrated source brightness measured in a 24.75" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W1. real 4 mag -0.9999995e9

w1mag_8 wise_prelimsc WISE W1 24.75" radius aperture magnitude
This column is default if this aperture measurement was not possible in W1 real 4 mag -0.9999995e9

w1magp wise_allskysc WISE Inverse-variance-weighted mean W1 magnitude computed from profile-fit measurements on the w1m individual frames covering this source.
This differs from w1mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w1mpro is computed by fitting all W1 frames simultaneously and incorporating a robust error model. This column is default if w1m=0, the mean flux is negative or if no individual frame measurements are possible. CAUTION: This is not a robust measurement of source brightness. It is provided as an internal repeatability diagnostic only. Users should always defer to w1mpro for the optimal flux measurement for point sources. real 4 mag -0.9999995e9

w1magp wise_prelimsc WISE Inverse-variance-weighted mean W1 magnitude computed from profile-fit measurements on the w1m individual frames covering this source
This differs from w1mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w1mpro is computed by fitting all W1 frames simultaneously and incorporating a robust error model. This column is default if w1m=0, the mean flux is negative or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w1mcor wise_allskysc WISE W1 aperture curve-of-growth correction.
This correction is subtracted from the nominal 8.25" aperture photometry brightness, w1mag_2, to give the "standard-aperture" magnitude. real 4 mag -0.9999995e9

w1mcor wise_prelimsc WISE W1 aperture curve-of-growth correction
This correction is subtracted from the nominal 8.25" aperture photometry brightness, w1mag_2, to give the "standard-aperture" magnitude real 4 mag -0.9999995e9

w1mjdmax wise_allskysc WISE The latest modified Julian Date (mJD) of the W1 single-exposures covering the source. float 8

w1mjdmean wise_allskysc WISE The average modified Julian Date (mJD) of the W1 single-exposures covering the source. float 8

w1mjdmin wise_allskysc WISE The earliest modified Julian Date (mJD) of the W1 single-exposures covering the source. float 8

w1mlq wise_allskysc WISE Probability measure that the source is variable in W1 flux.
The value is -log10(Q), where Q = 1 - P(Χ²). P is the cumulative chi-square distribution probability for the flux sample measured on the individual single-exposure images. The value is clipped at 9. int 4 -99999999

w1mpro wise_allskysc WISE W1 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W1 flux measurement has SNR<2.
This column is default if the source is nominally detected in W1, but no useful brightness estimate could be made. real 4 mag -0.9999995e9

w1mpro wise_prelimsc WISE W1 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W1 flux measurement has SNR<2
This column is default if the source is nominally detected in W1, but no useful brightness estimate could be made real 4 mag -0.9999995e9

w1ndf wise_allskysc WISE Number of degrees of freedom in the flux variability chi-square, W1. bigint 8 -99999999

w1nm wise_allskysc WISE Integer frame detection count in W1.
This column gives the number of individual 7.7s exposures on which this source was detected with SNR>3 in the W1 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures. bigint 8 -99999999

w1nm wise_prelimsc WISE Integer frame detection count in W1
This column gives the number of individual 7.7s exposures on which this source was detected with SNR>3 in the W1 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures bigint 8 -99999999

w1pa wise_allskysc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W1. real 4 degrees -0.9999995e9

w1pa wise_prelimsc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W1 real 4 degrees -0.9999995e9

w1rchi2 wise_allskysc WISE Reduced chi-squared of the W1 profile-fit photometry measurement.
This column is default if the W1 magnitude is a 95% confidence upper limit (i.e. the source is not detected). real 4 -0.9999995e9

w1rchi2 wise_prelimsc WISE Reduced chi-squared of the W1 profile-fit photometry measurement
This column is default if the W1 magnitude is a 95% confidence upper limit (i.e. the source is not detected) real 4 -0.9999995e9

w1rsemi wise_allskysc WISE Semi-major axis of the elliptical aperture used to measure source in W1. real 4 arcsec -0.9999995e9

w1rsemi wise_prelimsc WISE Semi-major axis of the elliptical aperture used to measure source in W1 real 4 arcsec -0.9999995e9

w1sat wise_allskysc WISE Saturated pixel fraction, W1.
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation. Saturation begins to occur for point sources brighter than [W1]∼8 mag. Saturation may occur in fainter sources because of a charged particle strike. real 4 -0.9999995e9

w1sat wise_prelimsc WISE Saturated pixel fraction, W1
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation real 4 -0.9999995e9

w1sigflux wise_allskysc WISE Uncertainty in the "raw" W1 source flux measurement in profile-fit photometry in units of digital numbers
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w1sigflux wise_prelimsc WISE Uncertainty in the "raw" W1 source flux measurement in profile-fit photometry in units of digital numbers
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w1sigm wise_allskysc WISE Uncertainty in the W1 "standard" aperture magnitude.
This column is default if the W1 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm wise_prelimsc WISE Uncertainty in the W1 "standard" aperture magnitude
This column is default if the W1 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_1 wise_allskysc WISE Uncertainty in the W1 5.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_1 wise_prelimsc WISE Uncertainty in the W1 5.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_2 wise_allskysc WISE Uncertainty in the W1 8.25" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_2 wise_prelimsc WISE Uncertainty in the W1 8.25" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_3 wise_allskysc WISE Uncertainty in the W1 11.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_3 wise_prelimsc WISE Uncertainty in the W1 11.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_4 wise_allskysc WISE Uncertainty in the W1 13.75" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_4 wise_prelimsc WISE Uncertainty in the W1 13.75" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_5 wise_allskysc WISE Uncertainty in the W1 16.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_5 wise_prelimsc WISE Uncertainty in the W1 16.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_6 wise_allskysc WISE Uncertainty in the W1 19.25" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_6 wise_prelimsc WISE Uncertainty in the W1 19.25" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_7 wise_allskysc WISE Uncertainty in the W1 22.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_7 wise_prelimsc WISE Uncertainty in the W1 22.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigm_8 wise_allskysc WISE Uncertainty in the W1 24.75" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w1sigm_8 wise_prelimsc WISE Uncertainty in the W1 24.75" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w1sigmpro wise_allskysc WISE W1 profile-fit photometric measurement uncertainty.
This column is default if the W1 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable. real 4 mag -0.9999995e9

w1sigmpro wise_prelimsc WISE W1 profile-fit photometric measurement uncertainty
This column is default if the W1 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable real 4 mag -0.9999995e9

w1sigp1 wise_allskysc WISE Standard deviation of the population of W1 fluxes measured on the w1m individual frames covering this source.
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w1m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w1sigp1 wise_prelimsc WISE Standard deviation of the population of W1 fluxes measured on the w1m individual frames covering this source
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w1m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w1sigp2 wise_allskysc WISE Standard deviation of the mean of the distribution of W1 fluxes (w1magp) computed from profile-fit measurements on the w1m individual frames covering this source.
This column is default if w1m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w1sigp2 wise_prelimsc WISE Standard deviation of the mean of the distribution of W1 fluxes (w1magp) computed from profile-fit measurements on the w1m individual frames covering this source
This column is default if w1m<2 or if no individual frame measurements are possible real 4 mag -0.9999995e9

w1sigsk wise_allskysc WISE The uncertainty in the W1 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70". real 4 ADU -0.9999995e9

w1sigsk wise_prelimsc WISE The uncertainty in the W1 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70" real 4 ADU -0.9999995e9

w1sky wise_allskysc WISE The trimmed average of the W1 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70".
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value. float 8 ADU -0.9999995e9

w1sky wise_prelimsc WISE The trimmed average of the W1 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70"
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value float 8 ADU -0.9999995e9

w1snr wise_allskysc WISE W1 profile-fit measurement signal-to-noise ratio.
This value is the ratio of the flux (w1flux) to flux uncertainty (w1sigflux) in the W1 profile-fit photometry measurement. This column is default if w1flux is negative, or if w1flux or w1sigflux are default. real 4 -0.9999995e9

w1snr wise_prelimsc WISE W1 profile-fit measurement signal-to-noise ratio
This value is the ratio of the flux (w1flux) to flux uncertainty (w1sigflux)in the W1 profile-fit photometry measurement. This column is default if w1flux is negative, or if w1flux or w1sigflux are default. real 4 -0.9999995e9

w2ba wise_allskysc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W2. real 4 arcsec -0.9999995e9

w2ba wise_prelimsc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W2 real 4 arcsec -0.9999995e9

w2cc_map wise_allskysc WISE Contamination and confusion map for this source in W2.
This column contains the integer equivalent of the 9-bit binary number that specifies if the W2 measurement is believed to be contaminated by or a spurious detection of an image artifact. smallint 2

w2cc_map wise_prelimsc WISE Contamination and confusion map for this source in W2
This column contains the integer equivalent of the 9-bit binary number that specifies if the W2 measurement is believed to be contaminated by or a spurious detection of an image artifact smallint 2

w2cc_map_str wise_allskysc WISE Contamination and confusion string in W2.
This column is a character string that denotes all artifacts that may contaminate the W2 measurement of this source, in the priority order D,P,H,O,d,p,h,o. char 9

w2cc_map_str wise_prelimsc WISE Contamination and confusion string in W2
This column is a character string that denotes all artifacts that may contaminate the W2 measurement of this source, in the priority order D,P,H,O char 9

w2conf wise_allskysc WISE Estimated confusion noise in the W2 sky background annulus, in digital numbers.
This number is the difference between the measured noise in the sky background w2sigsk and the noise measured in the same region on the Atlas Uncertainty Maps. float 8 ADU -0.9999995e9

w2conf wise_prelimsc WISE Estimated confusion noise in the W2 sky background annulus, in digital numbers
This number is the difference between the measured noise in the sky background w2sigsk and the noise measured in the same region on the Atlas Uncertainty Maps float 8 ADU -0.9999995e9

w2cov wise_allskysc WISE Mean pixel coverage in W2.
This column gives the mean pixel value from the W2 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 8.25" centered on the position of this source. real 4 -0.9999995e9

w2cov wise_prelimsc WISE Mean pixel coverage in W2
This column gives the mean pixel value from the W2 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 8.25" centered on the position of this source real 4 -0.9999995e9

w2dmag wise_allskysc WISE Difference between maximum and minimum magnitude of the source from all usable single-exposure frames, W2.
Single-exposure measurements with w2rchi2 values greater than 3.0 times the median are rejected from this computation. real 4 mag -0.9999995e9

w2flg wise_allskysc WISE W2 "standard" aperture measurement quality flag.
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. smallint 2 -9999

w2flg wise_prelimsc WISE W2 "standard" aperture measurement quality flag
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit smallint 2 -9999

w2flg_1 wise_allskysc WISE W2 5.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_1 wise_prelimsc WISE W2 5.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_2 wise_allskysc WISE W2 8.25" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_2 wise_prelimsc WISE W2 8.25" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_3 wise_allskysc WISE W2 11.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_3 wise_prelimsc WISE W2 11.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_4 wise_allskysc WISE W2 13.75" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_4 wise_prelimsc WISE W2 13.75" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_5 wise_allskysc WISE W2 16.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_5 wise_prelimsc WISE W2 16.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_6 wise_allskysc WISE W2 19.25" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_6 wise_prelimsc WISE W2 19.25" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_7 wise_allskysc WISE W2 22.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_7 wise_prelimsc WISE W2 22.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flg_8 wise_allskysc WISE W2 24.75" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w2flg_8 wise_prelimsc WISE W2 24.75" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w2flux wise_allskysc WISE The "raw" W2 source flux measured in profile-fit photometry in units of digital numbers.
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w2flux wise_prelimsc WISE The "raw" W2 source flux measured in profile-fit photometry in units of digital numbers
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w2frl wise_prelimsc WISE Fraction of W2 pixels affected by latents
This column gives the fraction of all W2 pixels in the stack of individual W2 exposures used to characterize this source that may be affected by the presence of a latent image produced by a bright source real 4 -0.9999995e9

w2frtr wise_allskysc WISE Fraction of W2 pixels affected by transients.
This column gives the fraction of all W2 pixels in the stack of individual W2 exposures used to characterize this source that may be affected by transient events. This number is computed by counting the number of pixels in the single exposure Bit Mask images with value "21" that are present within the profile-fitting area, a circular region with radius of 7.25", centered on the position of this source, and dividing by the total number of pixels in the same area that are available for measurement. real 4 -0.9999995e9

w2gerr wise_allskysc WISE Uncertainty in the W2 magnitude of source measured in elliptical aperture. real 4 mag -0.9999995e9

w2gerr wise_prelimsc WISE Uncertainty in the W2 magnitude of source measured in elliptical aperture real 4 mag -0.9999995e9

w2gflg wise_allskysc WISE W2 elliptical aperture measurement quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag, w2mflg. smallint 2 -9999

w2gflg wise_prelimsc WISE W2 elliptical aperture measurement quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag smallint 2 -9999

w2gmag wise_allskysc WISE W2 magnitude of source measured in the elliptical aperture described by w2rsemi, w2ba, and w2pa. real 4 mag -0.9999995e9

w2gmag wise_prelimsc WISE W2 magnitude of source measured in the elliptical aperture described by w2rsemi, w2ba, and w2pa real 4 mag -0.9999995e9

w2m wise_allskysc WISE Integer frame coverage in W2.
This column gives the number of individual 7.7s W2 exposures on which a profile-fit measurement of this source was possible. bigint 8 -99999999

w2m wise_prelimsc WISE Integer frame coverage in W2
This column gives the number of individual 7.7s W2 exposures on which a profile-fit measurement of this source was possible bigint 8 -99999999

w2mag wise_allskysc WISE W2 "standard" aperture magnitude.
This is the curve-of-growth corrected source brightness measured in an 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. real 4 mag -0.9999995e9

w2mag wise_prelimsc WISE W2 "standard" aperture magnitude
This is the curve-of-growth corrected source brightness measured in an 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness real 4 mag -0.9999995e9

w2mag_1 wise_allskysc WISE W2 5.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 5.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_1 wise_prelimsc WISE W2 5.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_2 wise_allskysc WISE W2 8.25" radius aperture magnitude.
This is the calibrated source brightness measured in a 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_2 wise_prelimsc WISE W2 8.25" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_3 wise_allskysc WISE W2 11.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 11.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_3 wise_prelimsc WISE W2 11.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_4 wise_allskysc WISE W2 13.75" radius aperture magnitude.
This is the calibrated source brightness measured in a 13.75" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_4 wise_prelimsc WISE W2 13.75" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_5 wise_allskysc WISE W2 16.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 16.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_5 wise_prelimsc WISE W2 16.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_6 wise_allskysc WISE W2 19.25" radius aperture magnitude
This is the calibrated source brightness measured in a 19.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag. -0.9999995e9

w2mag_6 wise_prelimsc WISE W2 19.25" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_7 wise_allskysc WISE W2 22.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 22.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_7 wise_prelimsc WISE W2 22.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2mag_8 wise_allskysc WISE W2 24.75" radius aperture magnitude.
This is the calibrated source brightness measured in a 24.75" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W2. real 4 mag -0.9999995e9

w2mag_8 wise_prelimsc WISE W2 24.75" radius aperture magnitude
This column is default if this aperture measurement was not possible in W2 real 4 mag -0.9999995e9

w2magp wise_allskysc WISE Inverse-variance-weighted mean W2 magnitude computed from profile-fit measurements on the w2m individual frames covering this source.
This differs from w2mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w2mpro is computed by fitting all W2 frames simultaneously and incorporating a robust error model. This column is default if w2m=0, the mean flux is negative or if no individual frame measurements are possible. CAUTION: This is not a robust measurement of source brightness. It is provided as an internal repeatability diagnostic only. Users should always defer to w2mpro for the optimal flux measurement for point sources. real 4 mag -0.9999995e9

w2magp wise_prelimsc WISE Inverse-variance-weighted mean W2 magnitude computed from profile-fit measurements on the w2m individual frames covering this source
This differs from w2mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w2mpro is computed by fitting all W2 frames simultaneously and incorporating a robust error model. This column is default if w2m=0, the mean flux is negative or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w2mcor wise_allskysc WISE W2 aperture curve-of-growth correction, in magnitudes.
This correction is subtracted from the nominal 8.25" aperture photometry brightness, w2mag_2, to give the "standard-aperture" magnitude. real 4 mag -0.9999995e9

w2mcor wise_prelimsc WISE W2 aperture curve-of-growth correction, in magnitudes
This correction is subtracted from the nominal 8.25" aperture photometry brightness, w2mag_2, to give the "standard-aperture" magnitude real 4 mag -0.9999995e9

w2mjdmax wise_allskysc WISE The latest modified Julian Date (mJD) of the W2 single-exposures covering the source. float 8

w2mjdmean wise_allskysc WISE The average modified Julian Date (mJD) of the W2 single-exposures covering the source. float 8

w2mjdmin wise_allskysc WISE The earliest modified Julian Date (mJD) of the W2 single-exposures covering the source. float 8

w2mlq wise_allskysc WISE Probability measure that the source is variable in W2 flux.
The value is -log10(Q), where Q = 1 - P(Χ²). P is the cumulative chi-square distribution probability for the flux sample measured on the individual single-exposure images. The value is clipped at 9. int 4 -99999999

w2mpro wise_allskysc WISE W2 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W2 flux measurement has SNR<2.
This column is default if the source is nominally detected in W2, but no useful brightness estimate could be made. real 4 mag -0.9999995e9

w2mpro wise_prelimsc WISE W2 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W2 flux measurement has SNR<2
This column is default if the source is nominally detected in W2, but no useful brightness estimate could be made real 4 mag -0.9999995e9

w2ndf wise_allskysc WISE Number of degrees of freedom in the flux variability chi-square, W2. bigint 8 -99999999

w2nm wise_allskysc WISE Integer frame detection count in W2.
This column gives the number of individual 7.7s exposures on which this source was detected with SNR>3 in the W2 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures. bigint 8 -99999999

w2nm wise_prelimsc WISE Integer frame detection count in W2
This column gives the number of individual 7.7s exposures on which this source was detected with SNR>3 in the W2 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures bigint 8 -99999999

w2pa wise_allskysc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W2. real 4 degrees -0.9999995e9

w2pa wise_prelimsc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W2 real 4 degrees -0.9999995e9

w2rchi2 wise_allskysc WISE Reduced chi-squared of the W2 profile-fit photometry measurement.
This column is default if the W2 magnitude is a 95% confidence upper limit (i.e. the source is not detected). real 4 -0.9999995e9

w2rchi2 wise_prelimsc WISE Reduced chi-squared of the W2 profile-fit photometry measurement
This column is default if the W2 magnitude is a 95% confidence upper limit (i.e. the source is not detected) real 4 -0.9999995e9

w2rsemi wise_allskysc WISE Semi-major axis of the elliptical aperture used to measure source in W2. real 4 arcsec -0.9999995e9

w2rsemi wise_prelimsc WISE Semi-major axis of the elliptical aperture used to measure source in W2 real 4 arcsec -0.9999995e9

w2sat wise_allskysc WISE Saturated pixel fraction, W2.
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation. Saturation begins to occur for point sources brighter than [W2]∼7 mag. Saturation may occur in fainter sources because of a charged particle strike. real 4 -0.9999995e9

w2sat wise_prelimsc WISE Saturated pixel fraction, W2
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation real 4 -0.9999995e9

w2sigflux wise_allskysc WISE Uncertainty in the "raw" W2 source flux measurement in profile-fit photometry in units of digital numbers.
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w2sigflux wise_prelimsc WISE Uncertainty in the "raw" W2 source flux measurement in profile-fit photometry in units of digital numbers
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w2sigm wise_allskysc WISE Uncertainty in the W2 "standard" aperture magnitude.
This column is default if the W2 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm wise_prelimsc WISE Uncertainty in the W2 "standard" aperture magnitude
This column is default if the W2 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_1 wise_allskysc WISE Uncertainty in the W2 5.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_1 wise_prelimsc WISE Uncertainty in the W2 5.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_2 wise_allskysc WISE Uncertainty in the W2 8.25" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_2 wise_prelimsc WISE Uncertainty in the W2 8.25" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_3 wise_allskysc WISE Uncertainty in the W2 11.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_3 wise_prelimsc WISE Uncertainty in the W2 11.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_4 wise_allskysc WISE Uncertainty in the W2 13.75" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_4 wise_prelimsc WISE Uncertainty in the W2 13.75" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_5 wise_allskysc WISE Uncertainty in the W2 16.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_5 wise_prelimsc WISE Uncertainty in the W2 16.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_6 wise_allskysc WISE Uncertainty in the W2 19.25" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_6 wise_prelimsc WISE Uncertainty in the W2 19.25" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_7 wise_allskysc WISE Uncertainty in the W2 22.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_7 wise_prelimsc WISE Uncertainty in the W2 22.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigm_8 wise_allskysc WISE Uncertainty in the W2 24.75" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w2sigm_8 wise_prelimsc WISE Uncertainty in the W2 24.75" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w2sigmpro wise_allskysc WISE W2 profile-fit photometric measurement uncertainty.
This column is default if the W2 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable. real 4 mag -0.9999995e9

w2sigmpro wise_prelimsc WISE W2 profile-fit photometric measurement uncertainty
This column is default if the W2 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable real 4 mag -0.9999995e9

w2sigp1 wise_allskysc WISE Standard deviation of the population of W2 fluxes measured on the w2m individual frames covering this source.
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w2m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w2sigp1 wise_prelimsc WISE Standard deviation of the population of W2 fluxes measured on the w2m individual frames covering this source
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w2m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w2sigp2 wise_allskysc WISE Standard deviation of the mean of the distribution of W2 fluxes (w2magp) computed from profile-fit measurements on the w2m individual frames covering this source.
This column is default if w2m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w2sigp2 wise_prelimsc WISE Standard deviation of the mean of the distribution of W2 fluxes (w2magp) computed from profile-fit measurements on the w2m individual frames covering this source
This column is default if w2m<2 or if no individual frame measurements are possible real 4 mag -0.9999995e9

w2sigsk wise_allskysc WISE The uncertainty in the W2 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70". real 4 ADU -0.9999995e9

w2sigsk wise_prelimsc WISE The uncertainty in the W2 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70" real 4 ADU -0.9999995e9

w2sky wise_allskysc WISE The trimmed average of the W2 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70".
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value. float 8 ADU -0.9999995e9

w2sky wise_prelimsc WISE The trimmed average of the W2 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70"
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value float 8 ADU -0.9999995e9

w2snr wise_allskysc WISE W2 profile-fit measurement signal-to-noise ratio.
This value is the ratio of the flux (w2flux) to flux uncertainty (w2sigflux) in the W2 profile-fit photometry measurement. This column is default if w2flux is negative, or if w2flux or w2sigflux are default. real 4 -0.9999995e9

w2snr wise_prelimsc WISE W2 profile-fit measurement signal-to-noise ratio
This value is the ratio of the flux (w2flux) to flux uncertainty (w2sigflux)in the W2 profile-fit photometry measurement. This column is default if w2flux is negative, or if w2flux or w2sigflux are default. real 4 -0.9999995e9

w3ba wise_allskysc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W3. real 4 arcsec -0.9999995e9

w3ba wise_prelimsc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W3 real 4 arcsec -0.9999995e9

w3cc_map wise_allskysc WISE Contamination and confusion map for this source in W3.
This column contains the integer equivalent of the 9-bit binary number that specifies if the W3 measurement is believed to be contaminated by or a spurious detection of an image artifact. smallint 2

w3cc_map wise_prelimsc WISE Contamination and confusion map for this source in W3
This column contains the integer equivalent of the 9-bit binary number that specifies if the W3 measurement is believed to be contaminated by or a spurious detection of an image artifact smallint 2

w3cc_map_str wise_allskysc WISE Contamination and confusion string in W3.
This column is a character string that denotes all artifacts that may contaminate the W3 measurement of this source, in the priority order D,P,H,O,d,p,h,o. char 9

w3cc_map_str wise_prelimsc WISE Contamination and confusion string in W3
This column is a character string that denotes all artifacts that may contaminate the W3 measurement of this source, in the priority order D,P,H,O char 9

w3conf wise_allskysc WISE Estimated confusion noise in the W3 sky background annulus, in digital numbers.
This number is the difference between the measured noise in the sky background w3sigsk and the noise measured in the same region on the Atlas Uncertainty Maps. float 8 ADU -0.9999995e9

w3conf wise_prelimsc WISE Estimated confusion noise in the W3 sky background annulus, in digital numbers
This number is the difference between the measured noise in the sky background w3sigsk and the noise measured in the same region on the Atlas Uncertainty Maps float 8 ADU -0.9999995e9

w3cov wise_allskysc WISE Mean pixel coverage in W3.
This column gives the mean pixel value from the W3 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 8.25" centered on the position of this source. real 4 -0.9999995e9

w3cov wise_prelimsc WISE Mean pixel coverage in W3
This column gives the mean pixel value from the W3 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 8.25" centered on the position of this source real 4 -0.9999995e9

w3dmag wise_allskysc WISE Difference between maximum and minimum magnitude of the source from all usable single-exposure frames, W3.
Single-exposure measurements with w3rchi2 values greater than 3.0 times the median are rejected from this computation. real 4 mag -0.9999995e9

w3flg wise_allskysc WISE W3 "standard" aperture measurement quality flag.
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. smallint 2 -9999

w3flg wise_prelimsc WISE W3 "standard" aperture measurement quality flag
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit smallint 2 -9999

w3flg_1 wise_allskysc WISE W3 5.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_1 wise_prelimsc WISE W3 5.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_2 wise_allskysc WISE W3 8.25" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_2 wise_prelimsc WISE W3 8.25" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_3 wise_allskysc WISE W3 11.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_3 wise_prelimsc WISE W3 11.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_4 wise_allskysc WISE W3 13.75" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_4 wise_prelimsc WISE W3 13.75" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_5 wise_allskysc WISE W3 16.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_5 wise_prelimsc WISE W3 16.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_6 wise_allskysc WISE W3 19.25" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_6 wise_prelimsc WISE W3 19.25" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_7 wise_allskysc WISE W3 22.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_7 wise_prelimsc WISE W3 22.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flg_8 wise_allskysc WISE W3 24.75" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w3flg_8 wise_prelimsc WISE W3 24.75" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w3flux wise_allskysc WISE The "raw" W3 source flux measured in profile-fit photometry in units of digital numbers.
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w3flux wise_prelimsc WISE The "raw" W3 source flux measured in profile-fit photometry in units of digital numbers
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w3frl wise_prelimsc WISE Fraction of W3 pixels affected by latents
This column gives the fraction of all W3 pixels in the stack of individual W3 exposures used to characterize this source that may be affected by the presence of a latent image produced by a bright source real 4 -0.9999995e9

w3frtr wise_allskysc WISE Fraction of W3 pixels affected by transients.
This column gives the fraction of all W3 pixels in the stack of individual W3 exposures used to characterize this source that may be affected by transient events. This number is computed by counting the number of pixels in the single exposure Bit Mask images with value "21" that are present within the profile-fitting area, a circular region with radius of 7.25", centered on the position of this source, and dividing by the total number of pixels in the same area that are available for measurement. real 4 -0.9999995e9

w3gerr wise_allskysc WISE Uncertainty in the W3 magnitude of source measured in elliptical aperture. real 4 mag -0.9999995e9

w3gerr wise_prelimsc WISE Uncertainty in the W3 magnitude of source measured in elliptical aperture real 4 mag -0.9999995e9

w3gflg wise_allskysc WISE W3 elliptical aperture measurement quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag, w3mflg. smallint 2 -9999

w3gflg wise_prelimsc WISE W3 elliptical aperture measurement quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag smallint 2 -9999

w3gmag wise_allskysc WISE W3 magnitude of source measured in the elliptical aperture described by w3rsemi, w3ba, and w3pa. real 4 mag -0.9999995e9

w3gmag wise_prelimsc WISE W3 magnitude of source measured in the elliptical aperture described by w3rsemi, w3ba, and w3pa real 4 mag -0.9999995e9

w3m wise_allskysc WISE Integer frame coverage in W3.
This column gives the number of individual 8.8s W3 exposures on which a profile-fit measurement of this source was possible. bigint 8 -99999999

w3m wise_prelimsc WISE Integer frame coverage in W3
This column gives the number of individual 8.8s W3 exposures on which a profile-fit measurement of this source was possible. bigint 8 -99999999

w3mag wise_allskysc WISE W3 "standard" aperture magnitude.
This is the curve-of-growth corrected source brightness measured in an 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. real 4 mag -0.9999995e9

w3mag wise_prelimsc WISE W3 "standard" aperture magnitude
This is the curve-of-growth corrected source brightness measured in an 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness real 4 mag -0.9999995e9

w3mag_1 wise_allskysc WISE W3 5.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 5.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag -0.9999995e9

w3mag_1 wise_prelimsc WISE W3 5.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_2 wise_allskysc WISE W3 8.25" radius aperture magnitude.
This is the calibrated source brightness measured in a 8.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag -0.9999995e9

w3mag_2 wise_prelimsc WISE W3 8.25" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_3 wise_allskysc WISE W3 11.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 11.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag -0.9999995e9

w3mag_3 wise_prelimsc WISE W3 11.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_4 wise_allskysc WISE W3 13.75" radius aperture magnitude.
This is the calibrated source brightness measured in a 13.75" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag. -0.9999995e9

w3mag_4 wise_prelimsc WISE W3 13.75" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_5 wise_allskysc WISE W3 16.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 16.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag -0.9999995e9

w3mag_5 wise_prelimsc WISE W3 16.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_6 wise_allskysc WISE W3 19.25" radius aperture magnitude.
This is the calibrated source brightness measured in a 19.25" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag -0.9999995e9

w3mag_6 wise_prelimsc WISE W3 19.25" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_7 wise_allskysc WISE W3 22.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 22.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_7 wise_prelimsc WISE W3 22.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3mag_8 wise_allskysc WISE W3 24.75" radius aperture magnitude.
This is the calibrated source brightness measured in a 24.75" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W3. real 4 mag -0.9999995e9

w3mag_8 wise_prelimsc WISE W3 24.75" radius aperture magnitude
This column is default if this aperture measurement was not possible in W3 real 4 mag -0.9999995e9

w3magp wise_allskysc WISE Inverse-variance-weighted mean W3 magnitude computed from profile-fit measurements on the w3m individual frames covering this source.
This differs from w3mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w3mpro is computed by fitting all W3 frames simultaneously and incorporating a robust error model. This column is default if w3m=0, the mean flux is negative or if no individual frame measurements are possible. CAUTION: This is not a robust measurement of source brightness. It is provided as an internal repeatability diagnostic only. Users should always defer to w3mpro for the optimal flux measurement for point sources. real 4 mag -0.9999995e9

w3magp wise_prelimsc WISE Inverse-variance-weighted mean W3 magnitude computed from profile-fit measurements on the w3m individual frames covering this source
This differs from w3mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w3mpro is computed by fitting all W3 frames simultaneously and incorporating a robust error model. This column is default if w3m=0, the mean flux is negative or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w3mcor wise_allskysc WISE W3 aperture curve-of-growth correction, in magnitudes.
This correction is subtracted from the nominal 8.25" aperture photometry brightness, w3mag_2, to give the "standard-aperture" magnitude. real 4 mag -0.9999995e9

w3mcor wise_prelimsc WISE W3 aperture curve-of-growth correction, in magnitudes
This correction is subtracted from the nominal 8.25" aperture photometry brightness, w3mag_2, to give the "standard-aperture" magnitude real 4 mag -0.9999995e9

w3mjdmax wise_allskysc WISE The latest modified Julian Date (mJD) of the W3 single-exposures covering the source. float 8

w3mjdmean wise_allskysc WISE The average modified Julian Date (mJD) of the W3 single-exposures covering the source. float 8

w3mjdmin wise_allskysc WISE The earliest modified Julian Date (mJD) of the W3 single-exposures covering the source. float 8

w3mlq wise_allskysc WISE Probability measure that the source is variable in W3 flux.
The value is -log10(Q), where Q = 1 - P(Χ²). P is the cumulative chi-square distribution probability for the flux sample measured on the individual single-exposure images. The value is clipped at 9. int 4 -99999999

w3mpro wise_allskysc WISE W3 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W3 flux measurement has SNR<2.
This column is default if the source is nominally detected in W3, but no useful brightness estimate could be made. real 4 mag -0.9999995e9

w3mpro wise_prelimsc WISE W3 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W3 flux measurement has SNR<2
This column is default if the source is nominally detected in W3, but no useful brightness estimate could be made real 4 mag -0.9999995e9

w3ndf wise_allskysc WISE Number of degrees of freedom in the flux variability chi-square, W3. bigint 8 -99999999

w3nm wise_allskysc WISE Integer frame detection count in W3.
This column gives the number of individual 8.8s exposures on which this source was detected with SNR>3 in the W3 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures. bigint 8 -99999999

w3nm wise_prelimsc WISE Integer frame detection count in W3
This column gives the number of individual 8.8s exposures on which this source was detected with SNR>3 in the W3 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures bigint 8 -99999999

w3pa wise_allskysc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W3. real 4 degrees -0.9999995e9

w3pa wise_prelimsc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W3 real 4 degrees -0.9999995e9

w3rchi2 wise_allskysc WISE Reduced chi-squared of the W3 profile-fit photometry measurement.
This column is default if the W3 magnitude is a 95% confidence upper limit (i.e. the source is not detected). real 4 -0.9999995e9

w3rchi2 wise_prelimsc WISE Reduced chi-squared of the W3 profile-fit photometry measurement
This column is default if the W3 magnitude is a 95% confidence upper limit (i.e. the source is not detected) real 4 -0.9999995e9

w3rsemi wise_allskysc WISE Semi-major axis of the elliptical aperture used to measure source in W3. real 4 arcsec -0.9999995e9

w3rsemi wise_prelimsc WISE Semi-major axis of the elliptical aperture used to measure source in W3 real 4 arcsec -0.9999995e9

w3sat wise_allskysc WISE Saturated pixel fraction, W3.
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation. Saturation begins to occur for point sources brighter than [W3]~4 mag. Saturation may occur in fainter sources because of a charged particle strike. real 4 -0.9999995e9

w3sat wise_prelimsc WISE Saturated pixel fraction, W3
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation real 4 -0.9999995e9

w3sigflux wise_allskysc WISE Uncertainty in the "raw" W3 source flux measurement in profile-fit photometry in units of digital numbers.
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w3sigflux wise_prelimsc WISE Uncertainty in the "raw" W3 source flux measurement in profile-fit photometry in units of digital numbers
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w3sigm wise_allskysc WISE Uncertainty in the W3 "standard" aperture magnitude.
This column is default if the W3 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm wise_prelimsc WISE Uncertainty in the W3 "standard" aperture magnitude
This column is default if the W3 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_1 wise_allskysc WISE Uncertainty in the W3 5.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_1 wise_prelimsc WISE Uncertainty in the W3 5.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_2 wise_allskysc WISE Uncertainty in the W3 8.25" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_2 wise_prelimsc WISE Uncertainty in the W3 8.25" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_3 wise_allskysc WISE Uncertainty in the W3 11.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_3 wise_prelimsc WISE Uncertainty in the W3 11.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_4 wise_allskysc WISE Uncertainty in the W3 13.75" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_4 wise_prelimsc WISE Uncertainty in the W3 13.75" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_5 wise_allskysc WISE Uncertainty in the W3 16.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_5 wise_prelimsc WISE Uncertainty in the W3 16.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_6 wise_allskysc WISE Uncertainty in the W3 19.25" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_6 wise_prelimsc WISE Uncertainty in the W3 19.25" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_7 wise_allskysc WISE Uncertainty in the W3 22.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_7 wise_prelimsc WISE Uncertainty in the W3 22.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigm_8 wise_allskysc WISE Uncertainty in the W3 24.75" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w3sigm_8 wise_prelimsc WISE Uncertainty in the W3 24.75" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w3sigmpro wise_allskysc WISE W3 profile-fit photometric measurement uncertainty.
This column is default if the W3 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable. real 4 mag -0.9999995e9

w3sigmpro wise_prelimsc WISE W3 profile-fit photometric measurement uncertainty
This column is default if the W3 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable real 4 mag -0.9999995e9

w3sigp1 wise_allskysc WISE Standard deviation of the population of W3 fluxes measured on the w3m individual frames covering this source.
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w3m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w3sigp1 wise_prelimsc WISE Standard deviation of the population of W3 fluxes measured on the w3m individual frames covering this source
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w3m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w3sigp2 wise_allskysc WISE Standard deviation of the mean of the distribution of W3 fluxes (w3magp) computed from profile-fit measurements on the w3m individual frames covering this source.
This column is default if w3m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w3sigp2 wise_prelimsc WISE Standard deviation of the mean of the distribution of W3 fluxes (w3magp) computed from profile-fit measurements on the w3m individual frames covering this source
This column is default if w3m<2 or if no individual frame measurements are possible real 4 mag -0.9999995e9

w3sigsk wise_allskysc WISE The uncertainty in the W3 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70". real 4 ADU -0.9999995e9

w3sigsk wise_prelimsc WISE The uncertainty in the W3 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70" real 4 ADU -0.9999995e9

w3sky wise_allskysc WISE The trimmed average of the W3 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70".
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value. float 8 ADU -0.9999995e9

w3sky wise_prelimsc WISE The trimmed average of the W3 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70"
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value float 8 ADU -0.9999995e9

w3snr wise_allskysc WISE W3 profile-fit measurement signal-to-noise ratio.
This value is the ratio of the flux (w3flux) to flux uncertainty (w3sigflux) in the W3 profile-fit photometry measurement. This column is default if w3flux is negative, or if w3flux or w3sigflux are default. real 4 -0.9999995e9

w3snr wise_prelimsc WISE W3 profile-fit measurement signal-to-noise ratio
This value is the ratio of the flux (w3flux) to flux uncertainty (w3sigflux)in the W3 profile-fit photometry measurement. This column is default if w3flux is negative, or if w3flux or w3sigflux are default. real 4 -0.9999995e9

w4ba wise_allskysc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W4. real 4 arcsec -0.9999995e9

w4ba wise_prelimsc WISE Axis ratio (b/a) of the elliptical aperture used to measure source in W4 real 4 arcsec -0.9999995e9

w4cc_map wise_allskysc WISE Contamination and confusion map for this source in W4.
This column contains the integer equivalent of the 9-bit binary number that specifies if the W4 measurement is believed to be contaminated by or a spurious detection of an image artifact. smallint 2

w4cc_map wise_prelimsc WISE Contamination and confusion map for this source in W4
This column contains the integer equivalent of the 9-bit binary number that specifies if the W4 measurement is believed to be contaminated by or a spurious detection of an image artifact smallint 2

w4cc_map_str wise_allskysc WISE Contamination and confusion string in W4.
This column is a character string that denotes all artifacts that may contaminate the W4 measurement of this source, in the priority order D,P,H,O char 9

w4cc_map_str wise_prelimsc WISE Contamination and confusion string in W4
This column is a character string that denotes all artifacts that may contaminate the W4 measurement of this source, in the priority order D,P,H,O char 9

w4conf wise_allskysc, wise_prelimsc WISE Estimated confusion noise in the W4 sky background annulus, in digital numbers
This number is the difference between the measured noise in the sky background w4sigsk and the noise measured in the same region on the Atlas Uncertainty Maps float 8 ADU -0.9999995e9

w4cov wise_allskysc WISE Mean pixel coverage in W4.
This column gives the mean pixel value from the W4 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 16.5" centered on the position of this source. real 4 -0.9999995e9

w4cov wise_prelimsc WISE Mean pixel coverage in W4
This column gives the mean pixel value from the W4 Atlas Tile Coverage Map within the "standard" aperture, a circular area with a radius of 17.0" centered on the position of this source real 4 -0.9999995e9

w4dmag wise_allskysc WISE Difference between maximum and minimum magnitude of the source from all usable single-exposure frames, W4.
Single-exposure measurements with w4rchi2 values greater than 3.0 times the median are rejected from this computation. real 4 mag -0.9999995e9

w4flg wise_allskysc WISE W4 "standard" aperture measurement quality flag.
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. smallint 2 -9999

w4flg wise_prelimsc WISE W4 "standard" aperture measurement quality flag
This flag indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit smallint 2 -9999

w4flg_1 wise_allskysc WISE W4 11.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_1 wise_prelimsc WISE W4 11.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_2 wise_allskysc WISE W4 16.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_2 wise_prelimsc WISE W4 16.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_3 wise_allskysc WISE W4 22.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_3 wise_prelimsc WISE W4 22.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_4 wise_allskysc WISE W4 27.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_4 wise_prelimsc WISE W4 27.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_5 wise_allskysc WISE W4 33.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_5 wise_prelimsc WISE W4 33.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_6 wise_allskysc WISE W4 38.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_6 wise_prelimsc WISE W4 38.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_7 wise_allskysc WISE W4 44.0" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_7 wise_prelimsc WISE W4 44.0" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flg_8 wise_allskysc WISE W4 49.5" radius aperture magnitude quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag. smallint 2 -9999

w4flg_8 wise_prelimsc WISE W4 49.5" radius aperture magnitude quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the standard aperture photometry quality flag smallint 2 -9999

w4flux wise_allskysc WISE The "raw" W4 source flux measured in profile-fit photometry in units of digital numbers.
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w4flux wise_prelimsc WISE The "raw" W4 source flux measured in profile-fit photometry in units of digital numbers
This value may be negative. This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w4frl wise_prelimsc WISE Fraction of W4 pixels affected by latents
This column gives the fraction of all W4 pixels in the stack of individual W4 exposures used to characterize this source that may be affected by the presence of a latent image produced by a bright source real 4 -0.9999995e9

w4frtr wise_allskysc WISE Fraction of W4 pixels affected by transients.
This column gives the fraction of all W4 pixels in the stack of individual W4 exposures used to characterize this source that may be affected by transient events. This number is computed by counting the number of pixels in the single exposure Bit Mask images with value "21" that are present within the profile-fitting area, a circular region with radius of 15.0", centered on the position of this source, and dividing by the total number of pixels in the same area that are available for measurement. real 4 -0.9999995e9

w4gerr wise_allskysc WISE Uncertainty in the W4 magnitude of source measured in elliptical aperture. real 4 mag -0.9999995e9

w4gerr wise_prelimsc WISE Uncertainty in the W4 magnitude of source measured in elliptical aperture real 4 mag -0.9999995e9

w4gflg wise_allskysc WISE W4 elliptical aperture measurement quality flag.
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag, w4mflg. smallint 2 -9999

w4gflg wise_prelimsc WISE W4 elliptical aperture measurement quality flag
Indicates if one or more image pixels in the measurement aperture for this band is confused with nearby objects, is contaminated by saturated or otherwise unusable pixels, or is an upper limit. The flag values are as described for the "standard" aperture photometry quality flag smallint 2 -9999

w4gmag wise_allskysc WISE W4 magnitude of source measured in the elliptical aperture described by w4rsemi, w4ba, and w4pa. real 4 mag -0.9999995e9

w4gmag wise_prelimsc WISE W4 magnitude of source measured in the elliptical aperture described by w4rsemi, w4ba, and w4pa real 4 mag -0.9999995e9

w4m wise_allskysc WISE Integer frame coverage in W4.
This column gives the number of individual 8.8s W4 exposures on which a profile-fit measurement of this source was possible. bigint 8 -99999999

w4m wise_prelimsc WISE Integer frame coverage in W4
This column gives the number of individual 8.8s W4 exposures on which a profile-fit measurement of this source was possible bigint 8 -99999999

w4mag wise_allskysc, wise_prelimsc WISE W4 "standard" aperture magnitude
This is the curve-of-growth corrected source brightness measured in an 16.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness real 4 mag -0.9999995e9

w4mag_1 wise_allskysc WISE W4 11.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 11.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_1 wise_prelimsc WISE W4 11.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_2 wise_allskysc WISE W4 16.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 16.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_2 wise_prelimsc WISE W4 16.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_3 wise_allskysc WISE W4 22.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 22.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_3 wise_prelimsc WISE W4 22.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_4 wise_allskysc WISE W4 27.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 27.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_4 wise_prelimsc WISE W4 27.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_5 wise_allskysc WISE W4 33.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 33.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_5 wise_prelimsc WISE W4 33.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_6 wise_allskysc WISE W4 38.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 38.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_6 wise_prelimsc WISE W4 38.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_7 wise_allskysc WISE W4 44.0" radius aperture magnitude.
This is the calibrated source brightness measured in a 44.0" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_7 wise_prelimsc WISE W4 44.0" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4mag_8 wise_allskysc WISE W4 49.5" radius aperture magnitude.
This is the calibrated source brightness measured in a 49.5" radius circular aperture centered on the source position on the Atlas Image. If the source is not detected in the aperture measurement, this is the 95% confidence upper limit to the brightness. The background sky reference level is measured in an annular region with inner radius of 50" and outer radius of 70". No curve-of-growth correction has been applied. This column is default if this aperture measurement was not possible in W4. real 4 mag -0.9999995e9

w4mag_8 wise_prelimsc WISE W4 49.5" radius aperture magnitude
This column is default if this aperture measurement was not possible in W4 real 4 mag -0.9999995e9

w4magp wise_allskysc WISE Inverse-variance-weighted mean W4 magnitude computed from profile-fit measurements on the w4m individual frames covering this source.
This differs from w4mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w4mpro is computed by fitting all W4 frames simultaneously and incorporating a robust error model. This column is default if w4m=0, the mean flux is negative or if no individual frame measurements are possible. CAUTION: This is not a robust measurement of source brightness. It is provided as an internal repeatability diagnostic only. Users should always defer to w4mpro for the optimal flux measurement for point sources. real 4 mag -0.9999995e9

w4magp wise_prelimsc WISE Inverse-variance-weighted mean W4 magnitude computed from profile-fit measurements on the w4m individual frames covering this source
This differs from w4mpro in that it is computed by combining the profile-fit measurements from individual frames, whereas w4mpro is computed by fitting all W4 frames simultaneously and incorporating a robust error model. This column is default if w4m=0, the mean flux is negative or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w4mcor wise_allskysc WISE W4 aperture curve-of-growth correction, in magnitudes.
This correction is subtracted from the nominal 16.5" aperture photometry brightness, w4mag_2, to give the "standard-aperture" magnitude. real 4 mag -0.9999995e9

w4mcor wise_prelimsc WISE W4 aperture curve-of-growth correction, in magnitudes
This correction is subtracted from the nominal 16.5" aperture photometry brightness, w4mag_2, to give the "standard-aperture" magnitude real 4 mag -0.9999995e9

w4mjdmax wise_allskysc WISE The latest modified Julian Date (mJD) of the W4 single-exposures covering the source. float 8

w4mjdmean wise_allskysc WISE The average modified Julian Date (mJD) of the W4 single-exposures covering the source. float 8

w4mjdmin wise_allskysc WISE The earliest modified Julian Date (mJD) of the W4 single-exposures covering the source. float 8

w4mlq wise_allskysc WISE Probability measure that the source is variable in W4 flux.
The value is -log10(Q), where Q = 1 - P(Χ²). P is the cumulative chi-square distribution probability for the flux sample measured on the individual single-exposure images. The value is clipped at 9. int 4 -99999999

w4mpro wise_allskysc WISE W4 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W4 flux measurement has SNR<2.
This column is default if the source is nominally detected in W4, but no useful brightness estimate could be made. real 4 mag -0.9999995e9

w4mpro wise_prelimsc WISE W4 magnitude measured with profile-fitting photometry, or the magnitude of the 95% confidence brightness upper limit if the W4 flux measurement has SNR<2
This column is default if the source is nominally detected in W4, but no useful brightness estimate could be made real 4 mag -0.9999995e9

w4ndf wise_allskysc WISE Number of degrees of freedom in the flux variability chi-square, W4. bigint 8 -99999999

w4nm wise_allskysc WISE Integer frame detection count in W4.
This column gives the number of individual 8.8s exposures on which this source was detected with SNR>3 in the W4 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures. bigint 8 -99999999

w4nm wise_prelimsc WISE Integer frame detection count in W4
This column gives the number of individual 8.8s exposures on which this source was detected with SNR>3 in the W4 profile-fit measurement. This number can be zero for sources that are well-detected on the coadded Atlas Image, but too faint for detection on the single exposures bigint 8 -99999999

w4pa wise_allskysc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W4. real 4 degrees -0.9999995e9

w4pa wise_prelimsc WISE Position angle (degrees E of N) of the elliptical aperture major axis used to measure source in W4 real 4 degrees -0.9999995e9

w4rchi2 wise_allskysc WISE Reduced chi-squared of the W4 profile-fit photometry measurement.
This column is default if the W4 magnitude is a 95% confidence upper limit (i.e. the source is not detected). real 4 -0.9999995e9

w4rchi2 wise_prelimsc WISE Reduced chi-squared of the W4 profile-fit photometry measurement
This column is default if the W4 magnitude is a 95% confidence upper limit (i.e. the source is not detected) real 4 -0.9999995e9

w4rsemi wise_allskysc WISE Semi-major axis of the elliptical aperture used to measure source in W4. real 4 arcsec -0.9999995e9

w4rsemi wise_prelimsc WISE Semi-major axis of the elliptical aperture used to measure source in W4 real 4 arcsec -0.9999995e9

w4sat wise_allskysc WISE Saturated pixel fraction, W4.
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation. Saturation begins to occur for point sources brighter than [W4]~0 mag. Saturation may occur in fainter sources because of a charged particle strike. real 4 -0.9999995e9

w4sat wise_prelimsc WISE Saturated pixel fraction, W4
The fraction of all pixels within the profile-fitting area in the stack of single-exposure images used to characterize this source that are flagged as saturated. A value larger than 0.0 indicates one or more pixels of saturation real 4 -0.9999995e9

w4sigflux wise_allskysc WISE Uncertainty in the "raw" W4 source flux measurement in profile-fit photometry in units of digital numbers.
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels. real 4 ADU -0.9999995e9

w4sigflux wise_prelimsc WISE Uncertainty in the "raw" W4 source flux measurement in profile-fit photometry in units of digital numbers
This column is default if no useful profile-fit measurement of the source is possible because of masked or otherwise unusable pixels real 4 ADU -0.9999995e9

w4sigm wise_allskysc, wise_prelimsc WISE Uncertainty in the W4 "standard" aperture magnitude
This column is default if the W4 "standard" aperture magnitude is an upper limit, or if an aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_1 wise_allskysc WISE Uncertainty in the W4 11.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_1 wise_prelimsc WISE Uncertainty in the W4 11.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_2 wise_allskysc WISE Uncertainty in the W4 16.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_2 wise_prelimsc WISE Uncertainty in the W4 16.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_3 wise_allskysc WISE Uncertainty in the W4 22.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_3 wise_prelimsc WISE Uncertainty in the W4 22.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_4 wise_allskysc WISE Uncertainty in the W4 27.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_4 wise_prelimsc WISE Uncertainty in the W4 27.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_5 wise_allskysc WISE Uncertainty in the W4 33.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_5 wise_prelimsc WISE Uncertainty in the W4 33.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_6 wise_allskysc WISE Uncertainty in the W4 38.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_6 wise_prelimsc WISE Uncertainty in the W4 38.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_7 wise_allskysc WISE Uncertainty in the W4 44.0" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_7 wise_prelimsc WISE Uncertainty in the W4 44.0" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigm_8 wise_allskysc WISE Uncertainty in the W4 49.5" radius aperture magnitude.
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible. real 4 mag -0.9999995e9

w4sigm_8 wise_prelimsc WISE Uncertainty in the W4 49.5" radius aperture magnitude
This column is default if the corresponding aperture magnitude is an upper limit, or if that aperture measurement was not possible real 4 mag -0.9999995e9

w4sigmpro wise_allskysc WISE W4 profile-fit photometric measurement uncertainty.
This column is default if the W4 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable. real 4 mag -0.9999995e9

w4sigmpro wise_prelimsc WISE W4 profile-fit photometric measurement uncertainty
This column is default if the W4 profile-fit magnitude is a 95% confidence upper limit or if the source is not measurable real 4 mag -0.9999995e9

w4sigp1 wise_allskysc WISE Standard deviation of the population of W4 fluxes measured on the w4m individual frames covering this source.
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w4m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w4sigp1 wise_prelimsc WISE Standard deviation of the population of W4 fluxes measured on the w4m individual frames covering this source
This provides a measure of the characteristic uncertainty of the measurement of this source on individual frames. This column is default if w4m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w4sigp2 wise_allskysc WISE Standard deviation of the mean of the distribution of W4 fluxes (w4magp) computed from profile-fit measurements on the w4m individual frames covering this source.
This column is default if w4m<2 or if no individual frame measurements are possible. real 4 mag -0.9999995e9

w4sigp2 wise_prelimsc WISE Standard deviation of the mean of the distribution of W4 fluxes (w4magp) computed from profile-fit measurements on the w4m individual frames covering this source
This column is default if w4m<2 or if no individual frame measurements are possible real 4 mag -0.9999995e9

w4sigsk wise_allskysc WISE The uncertainty in the W4 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70" real 4 ADU -0.9999995e9.

w4sigsk wise_prelimsc WISE The uncertainty in the W4 sky background value in units of digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70" real 4 ADU -0.9999995e9

w4sky wise_allskysc WISE The trimmed average of the W4 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70".
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value. float 8 ADU -0.9999995e9

w4sky wise_prelimsc WISE The trimmed average of the W4 sky background value in digital numbers measured in an annulus with an inner radius of 50" and outer radius of 70"
Both profile-fit and aperture photometry source brightness measurements are made relative to this sky background value float 8 ADU -0.9999995e9

w4snr wise_allskysc WISE W4 profile-fit measurement signal-to-noise ratio.
This value is the ratio of the flux (w4flux) to flux uncertainty (w4sigflux)in the W4 profile-fit photometry measurement. This column is default if w4flux is negative, or if w4flux or w4sigflux are default. real 4 -0.9999995e9

w4snr wise_prelimsc WISE W4 profile-fit measurement signal-to-noise ratio
This value is the ratio of the flux (w4flux) to flux uncertainty (w4sigflux)in the W4 profile-fit photometry measurement. This column is default if w4flux is negative, or if w4flux or w4sigflux are default. real 4 -0.9999995e9

warnFlag firstSource FIRST Warning flag indicating that the source may be a sidelobe of a nearby bright source. varchar 1 CODE_MISC

wcs RequiredDiffImage WSA CASU difference image tool option to specify use of implicit WCS in the input files (y/n; recommended value=y) varchar 1 ??

wcs RequiredDiffImage WSACalib CASU difference image tool option to specify use of implicit WCS in the input files (y/n; recommended value=y) varchar 1 ??

wcs RequiredDiffImage WSATransit CASU difference image tool option to specify use of implicit WCS in the input files (y/n; recommended value=y) varchar 1 ??

wcsAxes Multiframe WSA Number of axes in world co-ordinate system {image primary HDU keyword: WCSAXES} tinyint 1 0 ??

wcsAxes Multiframe WSACalib Number of axes in world co-ordinate system {image primary HDU keyword: WCSAXES} tinyint 1 0 ??

wcsAxes Multiframe WSATransit Number of axes in world co-ordinate system {image primary HDU keyword: WCSAXES} tinyint 1 0 ??

wcsPass CurrentAstrometry WSACalib Pass level of WCS {image extension keyword: WCSPASS} tinyint 1 0 POS_TRANSF_PARAM

wcsPass CurrentAstrometry WSATransit Pass level of WCS {image extension keyword: WCSPASS} tinyint 1 0 POS_TRANSF_PARAM

wcsPass CurrentAstrometry, PreviousAstrometry WSA Pass level of WCS {image extension keyword: WCSPASS} tinyint 1 0 POS_TRANSF_PARAM

windDirection Multiframe WSA Wind direction, azimuth {image primary HDU keyword: WIND_DIR} real 4 deg -0.9999995e9 OBS_CONDITIONS

windDirection Multiframe WSACalib Wind direction, azimuth {image primary HDU keyword: WIND_DIR} real 4 deg -0.9999995e9 OBS_CONDITIONS

windDirection Multiframe WSATransit Wind direction, azimuth {image primary HDU keyword: WIND_DIR} real 4 deg -0.9999995e9 OBS_CONDITIONS

windSpeed Multiframe WSA Wind speed {image primary HDU keyword: WIND_SPD} real 4 km/h -0.9999995e9 VELOC_WIND

windSpeed Multiframe WSACalib Wind speed {image primary HDU keyword: WIND_SPD} real 4 km/h -0.9999995e9 VELOC_WIND

windSpeed Multiframe WSATransit Wind speed {image primary HDU keyword: WIND_SPD} real 4 km/h -0.9999995e9 VELOC_WIND

wx wise_allskysc WISE The x-pixel coordinate of this source on the Atlas Image. real 4 pixels

wx wise_prelimsc WISE The x-pixel coordinate of this source on the Atlas Image real 4 pixels

wy wise_allskysc WISE The y-pixel coordinate of this source on the Atlas Image. real 4 pixels

wy wise_prelimsc WISE The y-pixel coordinate of this source on the Atlas Image real 4 pixels

WFAU, Institute for Astronomy,
Royal Observatory, Blackford Hill
Edinburgh, EH9 3HJ, UK
Tel +44 131 668 8356 (office)
or +44 131 668 8100 (switchboard)

wsa-support@roe.ac.uk
01/05/2013