Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...96..477v&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 96, no. 3, p. 477-484.
Astronomy and Astrophysics
Astrophysics
5
Astrolabes, Astrometry, Astronomical Catalogs, Astronomical Coordinates, Radio Stars, Stellar Motions, Azimuth, Real Time Operation
Scientific paper
From Mars 1988 to July 1991 the photoelectric CERGA astrolabe ASPHO was used to observe 11 star groups. During each annual cycle, each star was observed sufficiently to allow an early determination of FK5 catalog corrections with a precision of 0.03 and 0.04 arcsec in right ascension and declination respectively. The results are given here in the form of a combined catalog for the three years of observations, and corrections to the FK5 positions computed for the epoch 1990.0 and corrections to the FK5 proper motions are also given. Errors are estimated as a combination of the internal yearly error and of the nonlinearity of its apparent motion during the three years. The results are discussed, showing that the catalog is well linked to the FK5 system without shift in alpha or delta. It is concluded that the corrections in positions and proper motions given here are significant within estimated errors.
Billaud G.
Boche R.
Chauvineau Bertrand
Furia M.
Journet A.
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