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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===08552457-5538512
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ColumnValue  Explain   (UCD)
_RAJ200008 55 24.57264 "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)
_DEJ2000-55 38 51.2448 "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)
_RAB195008 54 01.27103 "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)
_DEB1950-55 27 19.0906 "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)
_Glon273.78081948 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-06.76810699 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)

RAJ2000133.852386 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000-55.647568 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)
errPA 0 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
_MASS08552457-5538512  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag15.082 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.043 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.045 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 30.2  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag14.568 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.060 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.060 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 23.0  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag14.314 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 15.3  (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)
Ndet665626   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 7.2 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA 70 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 755847162  (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 755847167  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemiss   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date2000-01-07  (date) Observation date (time.epoch;obs)
Scan 50  (scan) Scan number (within date) (obs.field)
GLON273.781 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT -6.768 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan -38.3 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451550.6829 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 1.41  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 0.99  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 1.13  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap15.006 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.068 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap14.372 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.066 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap14.110 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.067 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 6473 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW214 arcsec (distedgeew) Distance from the source to the nearest East or West scan edge (pos;arith.diff)
edgene   [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 0.8 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt 31 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag17.20 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag16.30 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)
scanKey41810  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 961614  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd 80  (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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