Tycho-2 neighbourhood (gaiadr2.tycho2_neighbourhood)
The table has 2482025 rows, 6 columns.
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.
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.
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External Catalogue source identifier