Tycho-2 TDSC Merge Neighbourhood (gaiaedr3.tycho2tdsc_merge_neighbourhood)

The table has 2536896 rows, 6 columns.


Tycho2TDSCmerge Neighbourhood table includes all good neighboursfor each matched Tycho2TDSCmerge object. A good neighbour for agiven Tycho2TDSCmerge source is a nearby Gaia object whose positionis compatible (within position errors) with the Tycho2TDSCmerge 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 (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://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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Name Type UCD Unit Description
source_id long meta.id
Dimensionless Unique Gaia source identifier
original_ext_source_id char meta.id.cross Dimensionless Original External Catalogue source identifier
angular_distance float pos.angDistance Angle[arcsec] Angular Distance between the two sources
score double meta.code Dimensionless Score of neighbours
xm_flag short meta.code.status Dimensionless Cross-match algorithm flag
tycho2tdsc_merge_oid int meta.id.cross Dimensionless External Catalogue source identifier