Systematic differences in position and proper motion between ILS catalogues and the main astrometric catalogues

Details Systematic differences in position and proper motion between ILS catalogues and the main astrometric catalogues Systematic differences in position and proper motion between ILS catalogues and the main astrometric catalogues

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26as...74...53s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 74, no. 1, July 1988, p. 53-61.

Astronomy and Astrophysics

Astrophysics

Astrometry, Astronomical Catalogs, Astronomical Coordinates, Stellar Motions, Error Analysis, Position (Location)

Scientific paper

The position and proper motion of individual star-pair centers in the IKSZ and AGK3 catalogs are compared with those obtained by latitude observations from ILS stations. The systematic differences arising from errors in proper motions in both catalogs are found to be nearly equal, and to be such that the epochs for the latitude series and the mean epochs of the catalogs do not differ by more than 10-20 years. The results suggest that the IKSZ catalog is more homogeneous than the AGK3 catalog.

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