<p>Is there any kind of concordance available between the sources in the Hipparcos catalog and the Gaia DR2 catalog? I.e., mapping the Gaia DR2 source_id to the Hipparcos HIP number?</p>

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2020-02-14T15:05:52.833Z
Do you want the mapping for an individual or small list of objects or for the whole Hipparcos catalog?  SIMBAD will do the former e.g. for [HD209458](http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+209458&submit=submit+id) and look under 'Identifiers'
astrosnapper
<gaia><star-maps><hipparcos>
What is the overlap between the Gaia and the Hipparcos catalog?
Joe Knapp
# What is the overlap between the Gaia and the Hipparcos catalog?

(Asked by: username_0 on 2020-02-14)

Is there any kind of concordance available between the sources in the Hipparcos catalog and the Gaia DR2 catalog? I.e., mapping the Gaia DR2 source\_id to the Hipparcos HIP number?

**Tags:** gaia, star-maps, hipparcos
> **Comments:**
> **username_1**: Do you want the mapping for an individual or small list of objects or for the whole Hipparcos catalog?  SIMBAD will do the former e.g. for [HD209458](http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+209458&submit=submit+id) and look under 'Identifiers'  

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## 0 answers

