gdr2.tycho2_best_neighbour

Description

Tycho-2 table lists each matched external catalogue object with its best neighbour in Gaia.

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
number_of_neighbours int meta.number Number of neighbours in Gaia Catalogue
source_id long
original_ext_source_id char
angular_distance double
gaia_astrometric_params short