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II/365/catwise The CatWISE2020 catalog (updated version 28-Jan-2021) (Marocco+, 2020)
The CatWISE2020 catalog (original column names in green) (1890715640 rows)
  -c=271.3178901 +48.2630339, eq=ICRS, rs=2
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ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (271.3178901+48.2630339)[ICRS] (pos.angDistance)
_RAJ200018 05 16.293624 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+48 15 46.92204 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 03 57.350464 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+48 15 26.68841 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon075.703106849 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+27.309778220 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)

source_id2722p484_b0-005601  (i) Tile name + processing code + wphot index (source_id) (meta.id)
RA_ICRS271.3178901 deg (i) Right ascension (ICRS) (1) (offset corrections applied by CDS, see Note (1)) (Note)   (pos.eq.ra;meta.main)
sigra 0.0501 arcsec [0/74.3] Uncertainty in ra (sigra) (stat.error;pos.eq.ra)
DE_ICRS+48.2630339 deg (i) Declination (ICRS) (1) (offset corrections applied by CDS, see Note (1)) (Note)   (pos.eq.dec;meta.main)
sigdec 0.0521 arcsec [0/83.3] Uncertainty in dec (sigdec) (stat.error;pos.eq.dec)
source_nameJ180516.29+481546.9  Source name (JHHMMSS.ss+DDMMSS.s; <CWISE JHHMMSS.ss+DDMMSS.s> in Simbad) (source_name) (meta.id;meta.main)
sigradec -0.0034 arcsec [-25.7/44.2] Uncertainty cross-term (sigradec) (stat.error)
wx1836.805 pix X-pixel coordinate in the unWISE full depth coadd (wx) (pos.cartesian.x)
wy 768.686 pix Y-pixel coordinate in the unWISE full depth coadd (wy) (pos.cartesian.y)
w1sky 0.70 ct [-98.2/4997] Frame sky background value, band-1; in dn units (w1sky) (Note 2)   (instr.background)
w1sigsk 3.0 ct [0.4/999] Frame sky background value uncertainty; band-1 (w1sigsk) (Note 2)   (stat.error)
w1conf 0.00 ct [0/999] Frame sky confusion based on the UNC images; in dn units (w1conf) (Note 2)   (instr.skyLevel)
w2sky 3.35 ct [-99/5000] Frame sky background value, band-2; in dn (w2sky) (Note 2)   (instr.background)
w2sigsk 10.7 ct [0.7/999] Frame sky background value uncertainty; band-2 (w2sigsk) (Note 2)   (stat.error)
w2conf 1.01 ct [0/999] Frame sky confusion based on the UNC images; in dn units (w2conf) (Note 2)   (instr.skyLevel)
w1NM 12   [0/221] Number of profile-fit flux measurements for source with SNR≥3, band 1 (w1NM) (meta.number)
w1M 12   [0/221] Number of profile-fit flux measurements for source, band-1 (w1M) (meta.number)
w2NM 12   [0/221] Number of profile-fit flux measurements for source with SNR≥3, band-2 (w2NM) (meta.number)
w2M 12   [0/221] Number of profile-fit flux measurements for source, band-2 (w2M) (meta.number)
MeanObsMJD57182.790674 MJD (i) [55205/58465] Mean observation epoch (MeanObsMJD) (time.epoch)
ra_pm271.3178627 deg Right ascension (ICRS) at Ep=2015.4 (ra_pm) (Note 3)   (pos.eq.ra)
sigra_pm 0.0486 arcsec [1e-4/99.94] Uncertainty in ra_pm (sigra_pm) (stat.error)
dec_pm 48.2630525 deg Declination (ICRS) at Ep=2015.4 (dec_pm) (Note 3)   (pos.eq.dec)
sigdec_pm 0.0515 arcsec [0/99.8] Uncertainty in dec_pm (sigdec_pm) (stat.error)
sigradec_pm -0.0038 arcsec [-99.2/99.9] Uncertainty cross-term (sigradec_pm) (stat.error)
PMRA 0.16186 arcsec/yr [-100/100] Motion in ra (PMRA) (1) (offset corrections applied by CDS, see Note (1)) (Note)   (pos.pm;pos.eq.ra)
sigPMRA 0.0110 arcsec/yr [7e-4/1000] Uncertainty in PMRA (sigPMRA) (stat.error;pos.pm;pos.eq.ra)
PMDec -0.00423 arcsec/yr [-100/100] Proper motion in dec (PMDec) (1) (offset corrections applied by CDS, see Note (1)) (Note)   (pos.pm;pos.eq.dec)
sigPMDec 0.0114 arcsec/yr [7e-4/1000] Uncertainty in PMDec (sigPMDec) (stat.error;pos.pm;pos.eq.dec)
w1snr_pm 51.1   [0/1000] Flux S/N ratio; band-1 (w1snr_pm) (stat.snr)
w2snr_pm 41.9   [0/1000] Flux S/N ratio; band-2 (w2snr_pm) (stat.snr)
w1flux_pm 9.8e+02 ct [-1.2e8/2e14] WPRO raw flux, band-1 (W1, 3.35um) in dn units (w1flux_pm) (phot.mag;em.IR.3-4um)
w1sigflux_pm 2e+01 ct [3.7e-4/3.5e12] WPRO raw flux uncertainty; band-1 (w1sigflux_pm) (stat.error)
w2flux_pm 9.1e+02 ct [-4.8e8/2e10] WPRO raw flux, band-2 (W2, 4.6um); in dn units (w2flux_pm) (phot.mag;em.IR.4-8um)
w2sigflux_pm 2e+01 ct [1e-4/3.2e13] Fit WPRO raw flux uncertainty; band-2 (w2sigflux_pm) (stat.error)
w1mpro_pm15.025 mag (i) [-10/27] WPRO magnitude in band-1 (W1: 3.35um) (w1mpro_pm) (Note 4)   (phot.mag;em.IR.3-4um)
w1sigmpro_pm 0.021 mag [0/0.6] W1mproPM uncertainty (w1sigmpro_pm) (stat.error)
w1rchi2_pm 2.262e+01   [8.3e-7/6.4e21] WPRO reduced chi2; band-1 (w1rchi2_pm) (stat.fit.chi2)
w2mpro_pm15.106 mag (i) [-10/25.5] WPRO magnitude in band-2 (W2: 4.6um) (w2mpro_pm) (Note 4)   (phot.mag;em.IR.4-8um)
w2sigmpro_pm 0.026 mag [0/0.6] W2mproPM uncertainty (w2sigmpro_pm) (stat.error)
w2rchi2_pm 3.857e+00   [2.6e-6/375600] WPRO reduced chi2; band-2 (w2rchi2_pm) (stat.fit.chi2)
rchi2_pm 1.315e+01   [8.3e-7/92260] Reduced chi squared; total (rchi2_pm) (stat.fit.chi2)
pmcode2N000  Quality of the PM solution (pmcode) (Note 5)   (meta.code.qual)
dist 2.235 arcsec (i) [0/20] Radial distance between apparitions (dist) (phys.angSize)
dw1mag 0.013 mag [-9.2/9.3] W1mpro difference (dw1mag) (phot.mag;arith.diff)
rch2w1 0.088   [0/100] Chi-square for dw1mag (1 DF) (rch2w1) (meta.note)
dw2mag-0.074 mag [-9.4/10.2] W2mpro difference (dw2mag) (phot.mag;arith.diff)
rch2w2 1.999   [0/100] Chi-square for dw2mag (1 DF) (rch2w2) (meta.note)
elon_avg272.793493 deg Averaged ecliptic longitude (elon_avg) (pos.ecliptic.lon)
elonSig 0.050 arcsec [0.001/1.6] One-sigma uncertainty in elon (elonSig) (stat.error)
elat_avg 71.689531 deg Averaged ecliptic latitude (elat_avg) (pos.ecliptic.lat)
elatSig 0.052 arcsec [0.001/1.7] One-sigma uncertainty in elat (elatSig) (stat.error)
Delon 1.686 arcsec Descending-ascending ecliptic longitude (Delon) (Note 6)   (pos;arith.diff)
DelonSig 0.100 arcsec [0.001/101.5] One-sigma uncertainty in Delon (DelonSig) (stat.error)
Delat -1.414 arcsec Descending-ascending ecliptic latitude (Delat) (pos;arith.diff)
DelatSig 0.108 arcsec [0.001/105.8] One-sigma uncertainty in Delat (DelatSig) (stat.error)
DelonSNR 16.790   [0/1065] |Delon|/DelonSig (DelonSNR) (stat.snr)
DelatSNR 13.092   [0/475] |Delat|/DelatSig (DelatSNR) (stat.snr)
chi2pmra 2.65e+02   [0/7.3e7] Chi-square for PMRA difference (1 DF) (chi2pmra) (meta.note)
chi2pmdec 6.75e+01   [0/2.2e8] Chi-square for PMRA difference (1 DF) (chi2pmdec) (meta.note)
ka3   [0123n] Astrometry usage code (Note 7)   (meta.code)
k13   [0123n] W1 photometry usage code (Note 7)   (meta.code)
k23   [0123n] W2 photometry usage code (Note 7)   (meta.code)
km3   [0123n] Proper motion usage code (Note 7)   (meta.code)
par_pm 0.891 arcsec [-831/569] Parallax from PM desc-asce elon (par_pm) (pos.parallax.trig)
par_pmSig 0.049 arcsec [0.001/53] One-sigma uncertainty in par_pm (par_pmSig) (stat.error)
par_stat 0.802 arcsec [-831/504] Parallax estimate from stationary solution (par_stat) (pos.parallax.trig)
par_sigma 0.050 arcsec [0.001/189] One-sigma uncertainty in par_stat (par_sigma) (stat.error)
dist_x 2.515 arcsec [0/2.75] Distance between CatWISE and AllWISE source (dist_x) (pos.angDistance)
cc_flags0000   [0DHOPdhop] Worst case 4 character cc_flag from AllWISE (cc_flags) (Note 8)   (meta.code)
ab_flags00   [0DHOP] Two character (W1 W2) artifact flag (ab_flags) (Note 8)   (meta.code)

WISEAWISEA  Display the allWISE data (II/328) within 3" (meta.ref.url)
  
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