A celestial reference frame based on extragalactic radio sources

Details A celestial reference frame based on extragalactic radio sources A celestial reference frame based on extragalactic radio sources

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26as...79..283w&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 79, no. 2, Aug. 1989, p. 283-289.

Astronomy and Astrophysics

Astrophysics

11

Astronomical Catalogs, Astronomical Coordinates, Extragalactic Radio Sources, Accuracy, Data Bases

Scientific paper

A reference frame represented by 210 extragalactic radio sources is presented which consists of two compilation catalogs, one forming a basic set of 50 objects with average position accuracies of 0.3 mas in right ascension (RA) and 0.5 mas in declination (Dec) and the other forming an extension consisting of 160 objects with average RA accuracies of 1.6 mas and Dec accuracies of 1.9 mas. The present work represents an improvement in the basic set by a factor of two relative to the work of Walter (1988). A conservative accuracy estimate of the total reference frame is at a level of 2 mas or better.

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