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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===16124520+2938295
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ColumnValue  Explain   (UCD)
_RAJ200016 12 45.20736 "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+29 38 29.5728 "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)
_RAB195016 10 45.35822 "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+29 46 05.3148 "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)
_Glon048.56206389 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+45.99814121 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)

RAJ2000243.188364 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+29.641548 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.18 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.16 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA102 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS16124520+2938295  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag16.832 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.161 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.161 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 7.7  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag15.857 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.136 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.136 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 8.6  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag14.990 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig 0.126 mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag 0.126 mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr 9.1  (k_snr) K Signal-to-noise ratio (stat.snr)
QflgCBB  (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)
Cflg000  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet061506   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 53.0 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA305 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 694907293  (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 694907306  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemisn   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1999-06-06  (date) Observation date (time.epoch;obs)
Scan 60  (scan) Scan number (within date) (obs.field)
GLON 48.562 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT 45.998 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)
JD2451335.7994 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 0.72  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 0.86  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 1.01  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap16.433 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.194 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap15.647 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.251 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap14.768 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.138 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 1317 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW169 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 0.7 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt202 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag20.10 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag17.70 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)
scanKey38264  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 880051  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd 21  (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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