URAT-1 BestNeighbour table lists each matched Gaia object with its best neighbour in the external catalogue.


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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
urat1_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