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“Proper Motions” of Extragalactic Sources and the Precession Constant

Published online by Cambridge University Press:  07 August 2017

Shuhe Wang ,
Tongqi Xu  and
Peizhen Lu
Shuhe Wang
Affiliation:
Shanghai Observatory, Chinese Academy of Sciences 200030 Shanghai, China PR
Tongqi Xu
Affiliation:
Shanghai Observatory, Chinese Academy of Sciences 200030 Shanghai, China PR
Peizhen Lu
Affiliation:
Shanghai Observatory, Chinese Academy of Sciences 200030 Shanghai, China PR

Abstract

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From the observational catalogues of the extragalatic sources, the common sources with larger observational intervals are selected. After a reduction of optical catalogue systems to the FK5, the “proper motions” of these sources are obtained in the FK5 system. With these values the correction of the precession constant has been estimated and compared with that obtained from the new techniques.

Type
Celestial Reference Frame
Information
Symposium - International Astronomical Union , Volume 156: Developments in Astrometry and their Impacts on Astrophysics , 1993 , pp. 387 - 390
Copyright
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