GSC2.3 best neighbour (gaiadr2.gsc23_best_neighbour)

The table has 870899123 rows, 8 columns.


GSC2.3 BestNeighbour table lists each matched Gaia object with its best neighbour in the external catalogue.


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 (, processed by the Gaia Data Processing and Analysis Consortium (DPAC, Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement.

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Name Type UCD Unit Description
gsc23_oid long

External Catalogue source identifier

number_of_neighbours int meta.number

Number of neighbours in External Catalogue

number_of_mates short meta.number

Number of mates in Gaia Catalogue

best_neighbour_multiplicity short meta.number

Number of neighbours with same probability as best neighbour

source_id long
original_ext_source_id char
angular_distance double
gaia_astrometric_params short