Precise positions in the FK4 system for 120 radio source reference stars

Details Precise positions in the FK4 system for 120 radio source reference stars Precise positions in the FK4 system for 120 radio source reference stars

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1374d&link_type=abstract

Astronomical Journal, vol. 87, Oct. 1982, p. 1374-1378.

Astronomy and Astrophysics

Astronomy

7

Astrometry, Celestial Reference Systems, Extragalactic Radio Sources, Reference Stars, Significance, Tables (Data)

Scientific paper

Positions are given in the FK4 system for 120 primary reference stars grouped around the optical counterparts of 11 extragalactic radio sources. The observations were made in 1979 and 1980 with the 6-in. transit circle of the U.S. Naval Observatory. The results reported here represent the first step in a three-tiered process to determine astrometric positions of the optical counterparts referred to the system of the FK4. One application of such positions is the determination of a nearly inertial optical reference frame, which eventually may be compared to a reference frame at radio wavelengths.

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