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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===20121770+1451475
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ColumnValue  Explain   (UCD)
_RAJ200020 12 17.70696 "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+14 51 47.5524 "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 09 58.74372 "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+14 42 44.9776 "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)
_Glon055.69470149 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-10.38519512 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)

RAJ2000303.073779 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+14.863209 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.07 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)
errPA101 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS20121770+1451475  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag14.710 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.037 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.039 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 42.5  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag14.279 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 30.0  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag14.235 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig 0.072 mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag 0.072 mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr 15.9  (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)
Bflg111  (bl_flg) JHK components fit to source (Note 7)   (meta.code)
Cflg000  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet666606   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 20.2 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA 9 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 339606483  (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 339606518  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemisn   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1998-09-23  (date) Observation date (time.epoch;obs)
Scan 32  (scan) Scan number (within date) (obs.field)
GLON 55.695 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT-10.385 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan-163.0 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451079.6656 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 2.05  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 1.31  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 1.05  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap14.550 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.040 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap14.157 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.056 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap14.337 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.031 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS10848 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW 87 arcsec (distedgeew) Distance from the source to the nearest East or West scan edge (pos;arith.diff)
edgese   [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 1.1 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt169 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag15.50 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag14.90 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)
scanKey21027  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 483610  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd138  (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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