Tycho-2 neighbourhood (gaiadr2.tycho2_neighbourhood)

The table has 2482025 rows, 6 columns.

Description

Tycho-2 Neighbourhood table includes all good neighbours for each matched external catalogue object. A good neighbour for a given external catalogue object is a nearby object in Gaia whose position is compatible (within position errors) with the target.

Attribution

If you have used Gaia data in your research, please use the following acknowledgement:

This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

More information can be found on the credit and citation instructions page.

Columns

Name Type UCD Unit Description
tycho2_oid long meta.id.cross

External Catalogue source identifier

source_id long meta.id
meta.main
meta.ref
original_ext_source_id char
angular_distance double
score double
gaia_astrometric_params short