| Cross-neighbours between SSA Source objects and the 2MASS PSC. |
| All PSC objects within 10 arcsec of each SSA Source object are recorded in the cross-neighbours table. This table can be used, for example, to get 2MASS counterparts to an SSA object with a defined positional tolerance (up to the maximum angular radius of 10 arcsec). The TWOMASS.twomass_psc and SSA.Source tables were joined to generate the cross-neighbours. |
| Name | Type | Length | Unit | Description | Default Value | Unified Content Descriptor |
|---|---|---|---|---|---|---|
| ssaID | bigint | 8 | The object identifier from the SSA Source table | ID_MAIN | ||
| pscID | int | 4 | The object identifier (pts_key) from TWOMASS.twomass_psc | ID_CATALOG | ||
| distanceMins | real | 4 | arcminutes | The angular separation of the cross-neighbour | POS_ANG_DIST_GENERAL | |
| Total length | 16 |