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Table · dataset · 2022

Hipparcos2 Neighbourhood

Listed in Gaia@AIP

<p>Table <code>hipparcos2_neighbourhood</code> includes all good neighbours for each matched Hipparcos2 object.

Description

A good neighbour for a given Hipparcos2 source is a nearby Gaia object whose position is compatible (within position errors) with the Hipparcos2 target. The cross-match algorithm is not symmetric and searches Hipparcos2 sources counterparts in Gaia.

The cross-match algorithm is positional and exploits the full 5 parameter covariance matrix of the Gaia astrometric solution when available and the external catalogue positions and position errors. In addition it takes into account the Gaia environment using the local density.</p> <p>Please note that the cross-match algorithm is a trade-off between multiple requirements, in particular between completeness and correctness.

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It is thus not limited to a simple cone search.</p> <p>Reference papers: <ul> <li>Marrese et al. (2017)</li> <li>Marrese et al. (2019)</li> </ul> </p>

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Where it is published

Catalogue records · 1

Topics

Inferred from text
Tabular 65%
Provenance · 1 source records, 8 field assertions
SourceKeyLast seenRaw
Gaia@AIPoai:gaia.aip.de:tables/gaiadr3.hipparcos2_neighbourhood5 d agoJSON v1
FieldAssertionExtractorEvidence
concepts[field].local:field:astronomymapping · gaia aip deconnector:gaia_aip_de@1.0.0
concepts[field].local:field:earth-environmentalmapping · gaia aip deconnector:gaia_aip_de@1.0.0
concepts[field].local:field:physicsmapping · gaia aip deconnector:gaia_aip_de@1.0.0
concepts[modality].local:modality:tabularenrichment · gaia aip dekeyword-concept-rules@1.0.0title+description (65%)
descriptionsource · gaia aip deconnector:gaia_aip_de@1.0.0/metadata/dc/description
license_textsource · gaia aip deconnector:gaia_aip_de@1.0.0
publication_datesource · gaia aip deconnector:gaia_aip_de@1.0.0
titlesource · gaia aip deconnector:gaia_aip_de@1.0.0/metadata/dc/title