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Astron. Astrophys. 335, L65-L68 (1998)

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4. Conclusions

We have presented a new large reference catalogue, the Tycho Reference Catalogue, providing an accurate, dense and stable realization of the ICRS/Hipparcos system. External errors in proper motions are below 2.5 mas/yr and internal errors are of the same size. A sequel, the TRC2, of 2.5 million stars is in progress and a first version, Tycho2, will appear in 1999.

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© European Southern Observatory (ESO) 1998

Online publication: June 26, 1998
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