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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===12445973-5400087
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ColumnValue  Explain   (UCD)
_RAJ200012 44 59.73744 "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)
_DEJ2000-54 00 08.7336 "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)
_RAB195012 42 08.68157 "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)
_DEB1950-53 43 44.4932 "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)
_Glon301.97395776 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+08.85733947 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)

RAJ2000191.248906 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000-54.002426 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.08 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.08 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA 90 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS12445973-5400087  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag15.428 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.076 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.077 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 19.8  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag14.961 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.084 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.085 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 14.0  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag14.107 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)
QflgAAU  (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)
Ndet663600   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 2.9 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA238 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 446692582  (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 889634010  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemiss   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date2000-03-28  (date) Observation date (time.epoch;obs)
Scan 46  (scan) Scan number (within date) (obs.field)
GLON301.974 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT 8.857 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan -60.9 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451631.6018 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 2.92  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 1.85  (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)
Jstdap15.049 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.096 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap14.494 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.179 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 554 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW191 arcsec (distedgeew) Distance from the source to the nearest East or West scan edge (pos;arith.diff)
edgene   [nsew] (distedgeflg) flag indicating to which edges the edgeNS and edgeEW values refer (pos.cartesian;instr.det)
dup1  (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 1.4 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt 57 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag16.80 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag15.60 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)
scanKey48626  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey1118376  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd 9  (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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