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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===13121492+1732226
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ColumnValue  Explain   (UCD)
_RAJ200013 12 14.92752 "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+17 32 22.6032 "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)
_RAB195013 09 47.64820 "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+17 48 16.7782 "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)
_Glon330.61870418 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+79.27536932 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)

RAJ2000198.062198 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+17.539612 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.52 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.48 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA176 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
_MASS13121492+1732226  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag16.615 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.149 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.149 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 7.6  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag15.675 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig  mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag  mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr   (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag15.763 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig 0.260 mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag 0.260 mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr 4.5  (k_snr) K Signal-to-noise ratio (stat.snr)
QflgBUD  (ph_qual) JHK Photometric quality flag (Note 5)   (meta.code.qual;phot)
Rflg202  (rd_flg) Source of JHK default mag (Note 6)   (meta.ref)
Bflg101  (bl_flg) JHK components fit to source (Note 7)   (meta.code)
Cflg000  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet040006   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 37.3 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA232 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 986468637  (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 174651518  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemisn   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1998-01-24  (date) Observation date (time.epoch;obs)
Scan112  (scan) Scan number (within date) (obs.field)
GLON330.618 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT 79.275 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan 185.1 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2450837.9812 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 1.19  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi   (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 1.16  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap16.543 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.289 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap  mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap  mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap16.521 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.769 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 1675 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW 65 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)
opt0   [0UT] (a) Associated optical source (Note 16)   (meta.id;meta.dataset)
Dopt  arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt  deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag  mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag  mag (vrmopt) Visual or red mag of associated optical source (phot.mag;em.opt.R)
Nopt0  (nopt_mchs) Number of optical sources within 5arcsec (Note 17)   (meta.number)
extKey   (ext_key) Record Identifier in XSC (meta.id.cross)
scanKey10449  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 240326  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd256  (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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