Northern Hemisphere observations of ICRF sources on the USNO stellar catalogue frame

Details Northern Hemisphere observations of ICRF sources on the USNO stellar catalogue frame Northern Hemisphere observations of ICRF sources on the USNO stellar catalogue frame

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...420.1163f&link_type=abstract

Astronomy and Astrophysics, v.420, p.1163-1169 (2004)

Astronomy and Astrophysics

Astrophysics

4

Astrometry, Reference System

Scientific paper

The most recent USNO stellar catalogue, the USNO B1.0 (Monet et al. \cite{Monet03}), provides positions for 1 042 618 261 objects, with a published astrometric accuracy of 200 mas and five-band magnitudes with a 0.3 mag accuracy. Its completeness is believed to be up to magnitude 21th in V-band. Such a catalogue would be a very good tool for astrometric reduction. This work investigates the accuracy of the USNO B1.0 link to ICRF and give an estimation of its internal and external accuracies by comparison with different catalogues, and by computation of ICRF sources using USNO B1.0 star positions.

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