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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===20195967+1641495
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ColumnValue  Explain   (UCD)
_RAJ200020 19 59.67384 "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+16 41 49.5528 "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 17 42.27375 "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+16 32 18.9482 "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)
_Glon058.28015978 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-10.96723451 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)

RAJ2000304.998641 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+16.697098 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.33 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.32 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA174 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS20195967+1641495  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag16.468 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.131 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.131 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 9.3  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag16.513 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.237 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.237 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 4.0  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag15.052 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)
QflgBDU  (ph_qual) JHK Photometric quality flag (Note 5)   (meta.code.qual;phot)
Rflg220  (rd_flg) Source of JHK default mag (Note 6)   (meta.ref)
Bflg120  (bl_flg) JHK components fit to source (Note 7)   (meta.code)
Cflgcc0  (cc_flg) Artifact contamination, confusion (Note 8)   (meta.code)
Ndet160500   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 4.1 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA205 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 323349025  (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 323349020  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemisn   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1998-09-26  (date) Observation date (time.epoch;obs)
Scan 32  (scan) Scan number (within date) (obs.field)
GLON 58.280 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT-10.967 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan 37.7 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451082.6610 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 0.77  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 1.24  (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)
Jstdap16.041 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.140 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap16.871 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.319 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 4705 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW213 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 2.4 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt 23 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag17.80 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag17.10 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)
scanKey20237  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 465433  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd 56  (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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