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