large_tables "II/246/out"2MASS Point Source Catalogue, output (on a total of 470,992,970 sources) ( Cutri R.M., Skrutskie M.F., Van Dyk S., et al.) "RAJ2000" (ra) Right ascension (J2000) deg pos.eq.ra;meta.main DOUBLE indexed primary "DEJ2000" (dec) Declination (J2000) (dec) deg pos.eq.dec;meta.main DOUBLE indexed primary "errMaj" (err_maj) Semi-major axis of position error ellipse arcsec stat.error REAL "errMin" (err_min) Semi-minor axis of position error ellipse arcsec stat.error REAL "errPA" [0,180] (err_ang) Position angle of error ellipse major axis (E of N) deg stat.error SMALLINT "2MASS" (designation) Source designation (1) meta.id;meta.main CHAR indexed "Jmag" ?(j_m) J selected default magnitude (2) mag phot.mag;em.IR.J REAL indexed "Jcmsig" ?(j_cmsig) J default magnitude uncertainty (3) mag stat.error;phot.mag REAL "e_Jmag" ?(j_msigcom) J total magnitude uncertainty (4) mag stat.error;phot.mag REAL "Jsnr" ?(j_snr) J Signal-to-noise ratio stat.snr DOUBLE "Hmag" ?(h_m) H selected default magnitude (2) mag phot.mag;em.IR.H REAL indexed "Hcmsig" ?(h_cmsig) H default magnitude uncertainty (3) mag stat.error;phot.mag REAL "e_Hmag" ?(h_msigcom) H total magnitude uncertainty (4) mag stat.error;phot.mag REAL "Hsnr" ?(h_snr) H Signal-to-noise ratio stat.snr DOUBLE "Kmag" ?(k_m) K selected default magnitude (2) mag phot.mag;em.IR.K REAL indexed "Kcmsig" ?(k_cmsig) K default magnitude uncertainty (3) mag stat.error;phot.mag REAL "e_Kmag" ?(k_msigcom) K total magnitude uncertainty (4) mag stat.error;phot.mag REAL "Ksnr" ?(k_snr) K Signal-to-noise ratio stat.snr DOUBLE "Qflg" (ph_qual) JHK Photometric quality flag (5) meta.code.qual;phot CHAR "Rflg" (rd_flg) Source of JHK default mag (6) meta.ref CHAR "Bflg" (bl_flg) JHK components fit to source (7) meta.code CHAR "Cflg" (cc_flg) Artifact contamination, confusion (8) meta.code CHAR "Ndet" (ndet) Number of aperture measurements (jjhhkk) (9) meta.number CHAR "prox" Distance between source and nearest neighbour arcsec pos.angDistance REAL "pxPA" ? (pxpa) Position angle of vector from source to nearest neighbour (E of N) deg pos.posAng SMALLINT "pxCntr" (pxcntr) Sequence number of nearest neighbour meta.number BIGINT "Xflg" [0,2] (gal_contam) Extended source contamination (10) meta.code SMALLINT "Aflg" [0,1] (mp_flg) Association with asteroid or comet (11) meta.code SMALLINT "Cntr" (pts_key) Unique source identifier in catalogue meta.id;meta.table INTEGER "Hemis" [ns] (hemis) Hemisphere of observation obs.param;obs CHAR "Date" (date) Observation date time.epoch;obs CHAR "Scan" (scan) Scan number (within date) obs.field SMALLINT "GLON" (glon) Galactic longitude (12) deg pos.galactic.lon REAL "GLAT" (glat) Galactic latitude (12) deg pos.galactic.lat REAL "Xscan" (x_scan) Distance of source from focal plane centerline arcsec pos.cartesian;instr.det REAL "JD" (jdate) Julian date of source measurement (13) d time.epoch DOUBLE indexed "Jpsfchi" ?(j_psfchi) J band reduced chi2 value of fit stat.fit.chi2;stat.value REAL "Hpsfchi" ?(h_psfchi) H band reduced chi2 value of fit stat.fit.chi2;stat.value REAL "Kpsfchi" ?(k_psfchi) K band reduced chi2 value of fit stat.fit.chi2;stat.value REAL "Jstdap" ?(j_m_stdap) J standard aperture magnitude (18) mag phot.mag;em.IR.J REAL "e_Jstdap" ?(j_msig_stdap) error on Jstdap mag stat.error REAL "Hstdap" ?(h_m_stdap) H standard aperture magnitude (18) mag phot.mag;em.IR.H REAL "e_Hstdap" ?(h_msig_stdap) error on Hstdap mag stat.error REAL "Kstdap" ?(k_m_stdap) K standard aperture magnitude (18) mag phot.mag;em.IR.K REAL "e_Kstdap" ?(k_msig_stdap) error on Kstdap mag stat.error REAL "edgeNS" (dist_edge_ns) Distance from the source to the nearest North or South scan edge arcsec pos;arith.diff INTEGER "edgeEW" (dist_edge_ew) Distance from the source to the nearest East or West scan edge arcsec pos;arith.diff SMALLINT "edge" [nsew] (dist_edge_flg) flag indicating to which edges the edgeNS and edgeEW values refer pos.cartesian;instr.det CHAR "dup" (dup_src) Flag indicating duplicate source (14) meta.code SMALLINT "use" (use_src) Use source flag (15) meta.code SMALLINT "opt" [0UT] (a) Associated optical source (16) meta.id;meta.dataset CHAR "Dopt" ?(dist_opt) Distance to associated optical source arcsec pos.angDistance REAL "PAopt" [0,360]? (phi_opt) position angle from optical source to the 2MASS source position deg pos.posAng SMALLINT "Bmag" ?(b_m_opt) Blue magnitude of associated optical source mag phot.mag;em.opt.B REAL "Rmag" ?(vr_m_opt) Visual or red mag of associated optical source mag phot.mag;em.opt.R REAL "Nopt" (nopt_mchs) Number of optical sources within 5arcsec (17) meta.number SMALLINT "extKey" ?(ext_key) Record Identifier in XSC meta.id.cross INTEGER "scanKey" (scan_key) Record Identifier in the Scan Information Table meta.id INTEGER "coaddKey" (coadd_key) Record Identifier in the Atlas Image Data Table meta.id;meta.dataset INTEGER "coadd" (coadd) Sequence number of the Atlas Image meta.number SMALLINT