APFS HIP Simple Query

This service computes apparent and/or intermediate places of the stars in the Hipparcos main catalogue. Please note the warning on apparent places for multiple stars in the service info.

The positions can be given either in the CIO system (default) or the old equinox system.

If you give a position or an object resolvable by Simbad, the service will choose the nearest Hipparcos star for the ephemeris.

Enter a Hipparcos catalogue number, or a (decimal, comma-separated) position or simbad identifier to use the closest Hipparcos star.
/ / (day/month/year)
Start date of generated ephemeris
/ / (day/month/year)
End date of generated ephemeris
Number of hours between two apparent positions


The Data Center is currently running in emergency mode after our database server failed catastrophically (see our blog for infos and updates).

This means, in particular, that services built on top of large tables may currently be broken. Since our replacement server is much slower than our usual machine, restoring them will take quite some time.

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