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VizieR

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II/246/out 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
The Point Source catalogue of 470,992,970 sources. Please acknowledge the usage of the 2MASS All-Sky Survey; see also the 2MASS Pages.    Note that the magnitudes in red correspond to low quality results (upper limits or very poor photometry) (470992970 rows)
  2MASS===00023828-0836549
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ColumnValue  Explain   (UCD)
_RAJ200000 02 38.28960 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (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.eq.ra)
_DEJ2000-08 36 54.9468 "d:m:s" Declination (FK5, Equinox=J2000.0) (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.eq.dec)
_RAB195000 00 04.57880 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (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.eq.ra)
_DEB1950-08 53 37.0444 "d:m:s" Declination (FK4, Equinox=B1950.0) (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.eq.dec)
_Glon088.72265075 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-68.18354005 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)

RAJ2000000.659540 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000-08.615263 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.16 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.14 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA 11 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS00023828-0836549  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag16.691 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.123 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.123 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 9.0  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag15.852 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.133 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.133 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 8.1  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag15.451 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig  mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag  mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr   (k_snr) K Signal-to-noise ratio (stat.snr)
QflgBBU  (ph_qual) JHK Photometric quality flag (Note 5)   (meta.code.qual;phot)
Rflg220  (rd_flg) Source of JHK default mag (Note 6)   (meta.ref)
Bflg110  (bl_flg) JHK components fit to source (Note 7)   (meta.code)
Cflg000  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet060600   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 57.7 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA239 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 197373187  (pxcntr) Sequence number of nearest neighbour (meta.number)
Xflg0   [0,2] (gal_contam) Extended source contamination (Note 10)   (meta.code)
Aflg0   [0,1] (mp_flg) Association with asteroid or comet (Note 11)   (meta.code)
Cntr 197373178  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemiss   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1998-10-07  (date) Observation date (time.epoch;obs)
Scan 73  (scan) Scan number (within date) (obs.field)
GLON 88.723 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT-68.183 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan 70.1 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451093.6951 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 0.67  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 0.82  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi   (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap16.765 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.129 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap16.011 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.258 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap  mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap  mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 9952 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW182 arcsec (distedgeew) Distance from the source to the nearest East or West scan edge (pos;arith.diff)
edgenw   [nsew] (distedgeflg) flag indicating to which edges the edgeNS and edgeEW values refer (pos.cartesian;instr.det)
dup0  (dup_src) Flag indicating duplicate source (Note 14)   (meta.code)
use1  (use_src) Use source flag (Note 15)   (meta.code)
optU   [0UT] (a) Associated optical source (Note 16)   (meta.id;meta.dataset)
Dopt 0.1 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt165 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag20.00 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag18.20 mag (vrmopt) Visual or red mag of associated optical source (phot.mag;em.opt.R)
Nopt1  (nopt_mchs) Number of optical sources within 5arcsec (Note 17)   (meta.number)
extKey   (ext_key) Record Identifier in XSC (meta.id.cross)
scanKey12084  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 277920  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd127  (coadd) Sequence number of the Atlas Image (meta.number)

OptOpt  Show the nearby Optical Sources from USNO and GSC Catalogues (meta.ref.url)
  
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