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The Transformation from FK4 To FK5 and the Definition of UT

Published online by Cambridge University Press:  12 April 2016

B.X Xu ,
Y.F Xia ,
T.Y. Huang  and
C.H. Han
B.X Xu
Affiliation:
Department, of AstronomyNanjing UniversityNanjing, 210008 People’s Republic of China
Y.F Xia
Affiliation:
Department, of AstronomyNanjing UniversityNanjing, 210008 People’s Republic of China
T.Y. Huang
Affiliation:
Department, of AstronomyNanjing UniversityNanjing, 210008 People’s Republic of China
C.H. Han
Affiliation:
Department, of AstronomyNanjing UniversityNanjing, 210008 People’s Republic of China

Abstract

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The different procedures of the transforation from FK4 to FK5 are reviewed. With these procedures some numerical examples for selected FK4 stars are given. Basing on the original work of Fricke (1985), we prefer to select the procedure developed by Standisti (1982). One of the main reasons for the procedure of Aoki et al. (1983) is to consist with the new definition of UT. Since the corrections “FK5 - FK4” for many stars are significant, even if adopting this procedure, it is still impossible to avoid the effect of the right ascension discontinuities on UT.

Type
Part 1. Oral Papers
Information
International Astronomical Union Colloquium , Volume 127: Reference Systems , 1991 , pp. 116 - 119
Copyright
Copyright © United States Naval Observatory 1991

References

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