2MASS Point Source Catalog (PSC) (catalogs.tmass)
The table has 470992960 rows, 17 columns.
Description
The 2MASS PSC catalog contains 470,992,970 near-infrared sources. A more detail description of the columns can be found here.
This table is cross-matched with Gaia DR2 gaia_source table through gaiadr2.tmass_best_neighbour reference table.
Columns
| Name | Type | UCD | Unit | Description |
|---|---|---|---|---|
| tmass_oid | int | meta.id |
Incremental integer identifier added for the purpose of cross referencing |
|
| designation | char | meta.id |
Source designation formed from sexigesimal coordinates |
|
| ra | double | pos.eq.ra | Angle[deg] |
J2000 right ascension with respect to the ICRS |
| dec | double | pos.eq.dec | Angle[deg] |
J2000 declination with respect to the ICRS |
| err_maj | float | stat.error | Angle[arcsec] |
Semi-major axis length of the one sigma position uncertainty ellipse |
| err_min | float | stat.error | Angle[arcsec] |
Semi-minor axis length of the one sigma position uncertainty ellipse |
| err_ang | short | Angle[deg] |
Position angle on the sky of the semi-major axis of the position uncertainty ellipse (East of North) |
|
| j_m | float | phot.mag | Magnitude[mag] |
J-band selected magnitude or 95% confidence upper limit |
| j_msigcom | float | stat.error | Magnitude[mag] |
Total J-band magnitude uncertainty |
| h_m | float | phot.mag | Magnitude[mag] |
H-band selected magnitude or 95% confidence upper limit |
| h_msigcom | float | stat.error | Magnitude[mag] |
Total H-band magnitude uncertainty |
| k_m | float | phot.mag | Magnitude[mag] |
K-band selected magnitude or 95% confidence upper limit |
| k_msigcom | float | stat.error | Magnitude[mag] |
Total H-band magnitude uncertainty |
| ph_qual | char | meta.code.qual |
Photometric quality flag |
|
| ext_key | int | meta.id |
Unique identification number of the record in the XSC that corresponds to this point source. |
|
| jdate | double | time.epoch | Time[Julian Date (day)] |
The Julian Date of the source measurement accurate to +30 seconds |
| pos | char |