Astrometric Catalogues Server

Description

This server page provides access to the Tycho-2 catalogue, to the main Hipparcos and Tycho-1 catalogues and to the Tycho Reference Catalogue (TRC). The first three catalogues are based on observations made by the ESA Hipparcos satellite, the TRC is based on the Tycho catalogue and the Astrographic catalogue. For more information on the Hipparcos mission and the catalogues please refer to the ESA publication SP-1200. The TRC catalogue is described in A&A, 335, L65-L68 (1998) - July(III) 1998.

The catalog server is implemented in pure Perl, follows the ASU (Astronomical Server URL) conventions.

A client to access these catalogs at ESO directly from your computer (without Web browser) is available by using the ESO Skycat tool. It is available for SunOS, Solaris, HPUX and Linux at ftp.archive.eso.org/pub/skycat.

News & Updates
08-Feb-2000: Tycho-2 catalog included

Query Form

To retrieve a list of objects from either the Hipparcos or the Tycho catalog enter a coordinate pair in the R.A. and Dec. fields (J2000) OR an astronomical object name in the Object Name field. Please note that this server is based on the original ASCII-files. No special effort has been made to optimize the performance. Therefor the server performs very poor around the celestial poles for the Hipparcos catalog, where it has to read the complete catalog to find the objects.

Coordinates:	R.A. : (hh mm ss)	Dec. : (ądd mm ss)
Object Name:	will be resolved by Simbad.
Catalogue selection:
Output format:
Search radius:	Maximum distance from center (arcmin)