VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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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===20482578-0822036
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ColumnValue  Explain   (UCD)
_RAJ200020 48 25.78224 "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)
_DEJ2000-08 22 03.6372 "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 45 44.58444 "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)
_DEB1950-08 33 11.2087 "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)
_Glon038.94329793 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-29.77314570 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)

RAJ2000312.107426 deg (i) (ra) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000-08.367677 deg (i) (dec) Declination (J2000) (dec) (pos.eq.dec;meta.main)
errMaj 0.11 arcsec (err_maj) Semi-major axis of position error ellipse (stat.error)
errMin 0.07 arcsec (err_min) Semi-minor axis of position error ellipse (stat.error)
errPA 89 deg [0,180] (err_ang) Position angle of error ellipse major axis (E of N) (stat.error)
2MASS20482578-0822036  (i) (designation) Source designation (Note 1)   (meta.id;meta.main)
Jmag15.003 mag (i) (j_m) J selected default magnitude (Note 2)   (phot.mag;em.IR.J)
Jcmsig 0.033 mag (j_cmsig) J default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Jmag 0.036 mag (j_msigcom) J total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.J)
Jsnr 33.6  (j_snr) J Signal-to-noise ratio (stat.snr)
Hmag14.772 mag (i) (h_m) H selected default magnitude (Note 2)   (phot.mag;em.IR.H)
Hcmsig 0.066 mag (h_cmsig) H default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Hmag 0.067 mag (h_msigcom) H total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.H)
Hsnr 16.6  (h_snr) H Signal-to-noise ratio (stat.snr)
Kmag14.758 mag (i) (k_m) K selected default magnitude (Note 2)   (phot.mag;em.IR.K)
Kcmsig 0.114 mag (k_cmsig) K default magnitude uncertainty (Note 3)   (stat.error;phot.mag)
e_Kmag 0.115 mag (k_msigcom) K total magnitude uncertainty (Note 4)   (stat.error;phot.mag;em.IR.K)
Ksnr 9.2  (k_snr) K Signal-to-noise ratio (stat.snr)
QflgAAB  (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)
Ndet660606   [0-9] (ndet) Number of aperture measurements (jjhhkk) (Note 9)   (meta.number)
prox 22.3 arcsec Distance between source and nearest neighbour (pos.angDistance)
pxPA115 deg (pxpa) Position angle of vector from source to nearest neighbour (E of N) (pos.posAng)
pxCntr 134504293  (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 134504302  (pts_key) Unique source identifier in catalogue (meta.id;meta.table)
Hemiss   [ns] (hemis) Hemisphere of observation (obs.param;obs)
Date1998-10-21  (date) Observation date (time.epoch;obs)
Scan 28  (scan) Scan number (within date) (obs.field)
GLON 38.943 deg (glon) Galactic longitude (Note 12)   (pos.galactic.lon)
GLAT-29.773 deg (glat) Galactic latitude (Note 12)   (pos.galactic.lat)
Xscan 36.5 arcsec (x_scan) Distance of source from focal plane centerline (pos.cartesian;instr.det)
JD2451107.5551 d (jdate) Julian date of source measurement (Note 13)   (time.epoch)
Jpsfchi 0.78  (j_psfchi) J band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Hpsfchi 1.13  (h_psfchi) H band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Kpsfchi 0.93  (k_psfchi) K band reduced chi2 value of fit (stat.fit.chi2;stat.value)
Jstdap14.999 mag (jmstdap) J standard aperture magnitude (Note 18)   (phot.mag;em.IR.J)
e_Jstdap 0.068 mag (jmsigstdap) error on Jstdap (stat.error)
Hstdap14.854 mag (hmstdap) H standard aperture magnitude (Note 18)   (phot.mag;em.IR.H)
e_Hstdap 0.168 mag (hmsigstdap) error on Hstdap (stat.error)
Kstdap14.474 mag (kmstdap) K standard aperture magnitude (Note 18)   (phot.mag;em.IR.K)
e_Kstdap 0.185 mag (kmsigstdap) error on Kstdap (stat.error)
edgeNS 9064 arcsec (distedgens) Distance from the source to the nearest North or South scan edge (pos;arith.diff)
edgeEW216 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 0.8 arcsec (dist_opt) Distance to associated optical source (pos.angDistance)
PAopt200 deg [0,360] (phi_opt) position angle from optical source to the 2MASS source position (pos.posAng)
Bmag15.90 mag (bmopt) Blue magnitude of associated optical source (phot.mag;em.opt.B)
Rmag15.90 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)
scanKey 7793  (scan_key) Record Identifier in the Scan Information Table (meta.id)
coaddKey 179230  (coadd_key) Record Identifier in the Atlas Image Data Table (meta.id;meta.dataset)
coadd162  (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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