2008-01-15T15:23:00Z
50
The 2MASS point source catalog
The 2MASS Point Source Catalogue,
short a couple of exotic fields.
We provide this data mainly for matching with other catalogs
within our TAP service.
stars
surveys
astrometry
Catalog
Infrared
0/0-11
8.33e-20 1.863e-19
1997-06-07 2001-02-16
//scs#pgs-pos-index
Position ICRS Epoch J2000.0 "RAJ2000" "DEJ2000"
10000
10000
10000
pts_key is called cntr in the IRSA/GATOR version of 2MASS. This
sequential number was defined when source records from final data
processing were loaded into the Point Source Working Database.
Pts_key is incremented in order (or reverse order depending on
the scan direction) of declination within a scan. For
this reason, on average sources with close pts_key values are
close to each other on the sky, except at Tile boundaries.
Pts_key ordering thus provides a useful mapping of the 2MASS
release on storage media. PSC sources are cross-referenced in the
XSC, Known Asteroid Detection List, Known Comet Detection List,
and Planet and Planetary Satellite Detection
List via the value of pts_key.
8.0.
"E"
This category includes detections where the goodness-of-fit quality of
the profile-fit photometry was very poor (rflg=2 and
[jhk]psf_chi>10.0), or detections where psf fit photometry did not
converge and an aperture magnitude is reported (rflg=4), or
detections where the number of frames was too small in relation to the
number of frames in which a detection was geometrically possible
(rflg="1" or rflag="2").
"A"
Detections in any brightness regime where valid measurements were made
(rflg="1","2" or "3") with [jhk]\\_snr>10 AND [jhk]\\_cmsig<0.10857.
"B"
Detections in any brightness regime where valid measurements were made
(rflg="1","2" or "3") with [jhk]\\_snr>7 AND [jhk]\\_cmsig<0.15510.
"C"
Detections in any brightness regime where valid measurements were made
(rflg="1","2" or "3") with [jhk]_snr>5 AND [jhk]_cmsig<0.21714.
"D"
Detections in any brightness regime where valid measurements were made
(rflg="1","2" or "3") with no [jhk]_snr or [jhk]_cmsig requirement.
]]>
1"
More than one component was fit simultaneously during R2 profile-fit
photometry, where the value of the field is the number of components
simultaneously fit. The maximum number of components is 7 in any band
for the PSC, so this bflg is always a three character flag.
Multi-component fitting occurs only for profile-fitting, and only when
more than one detection is found within ~5". Single detections that are
not well-fit by a single PSF are not split.
]]>
twomass_q
2Mass Query
127.567785
1.526871
0.001