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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===20161100+4956062
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ColumnValue  Explain   (UCD)
_RAJ200020 16 11.00064 "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+49 56 06.2520 "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)
_RAB195020 14 42.97622 "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+49 46 47.9970 "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)
_Glon085.61023347 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+08.16033221 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)

RAJ2000304.045836 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+49.935070 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.24 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.22 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA135 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS20161100+4956062  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag16.923 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.166 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.166 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 6.1  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag16.202 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.187 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.188 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 5.1  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag15.655 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig 0.210 mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag 0.211 mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr 5.1  (k_snr) K Signal-to-noise ratio (stat.snr)
QflgCCC  (ph_qual) JHK Photometric quality flag (Note 5)   (meta.code.qual;phot)
Rflg222  (rd_flg) Source of JHK default mag (Note 6)   (meta.ref)
Bflg111  (bl_flg) JHK components fit to source (Note 7)   (meta.code)
Cflgccc  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet060606   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 17.0 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA296 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr1118021160  (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)
Cntr1118021149  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemisn   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date2000-05-13  (date) Observation date (time.epoch;obs)
Scan111  (scan) Scan number (within date) (obs.field)
GLON 85.610 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT 8.160 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan 32.0 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451677.9728 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 1.05  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 1.42  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 0.86  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap17.249 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.413 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap16.295 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.311 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap15.527 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.228 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 7490 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW221 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 0.3 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt 81 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag19.30 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag18.40 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)
scanKey59999  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey1379962  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd 91  (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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