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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===18501047+1359052
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ColumnValue  Explain   (UCD)
_RAJ200018 50 10.47720 "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+13 59 05.2080 "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)
_RAB195018 47 52.90846 "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+13 55 32.4527 "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)
_Glon045.29220399 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+06.60104650 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)

RAJ2000282.543655 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+13.984780 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.06 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.06 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA 17 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
_MASS18501047+1359052  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag14.739 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.041 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.043 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 40.0  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag14.078 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.043 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.044 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 36.1  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag14.043 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig 0.070 mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag 0.070 mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr 17.2  (k_snr) K Signal-to-noise ratio (stat.snr)
QflgAAA  (ph_qual) JHK Photometric quality flag (Note 5)   (meta.code.qual;phot)
Rflg222  (rd_flg) Source of JHK default mag (Note 6)   (meta.ref)
Bflg212  (bl_flg) JHK components fit to source (Note 7)   (meta.code)
Cflgc0c  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet666626   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 4.6 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA356 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 693758684  (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 693758695  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemisn   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1999-06-11  (date) Observation date (time.epoch;obs)
Scan 58  (scan) Scan number (within date) (obs.field)
GLON 45.292 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT 6.601 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan 81.1 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451340.7972 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 0.57  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 1.34  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 0.98  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap14.638 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.034 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap13.995 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.043 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap14.036 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.026 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 7676 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW171 arcsec (distedgeew) Distance from the source to the nearest East or West scan edge (pos;arith.diff)
edgesw   [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 0.7 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt173 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag18.80 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag16.40 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)
scanKey38185  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 878247  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd173  (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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