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New Celestial Reference System

Published online by Cambridge University Press:  12 April 2016

P. K. Seidelmann ,
G. H. Kaplan  and
T. C. Van Flandern
P. K. Seidelmann
Affiliation:
U.S. Naval Observatory, Washington, D.C. 20390
G. H. Kaplan
Affiliation:
U.S. Naval Observatory, Washington, D.C. 20390
T. C. Van Flandern
Affiliation:
U.S. Naval Observatory, Washington, D.C. 20390

Abstract

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The IAU (1976) System of Astronomical Constants, the FK5 and new lunar and planetary theories are being introduced in 1984. The investigation and planning for the transition has revealed the complex interdependencies between observational techniques and the reference systems, and their strong link to the rotating and orbiting Earth. The inaccuracies in our knowledge of the star positions, astronomical constants and the rotation and motion of the Earth are embedded in subtle ways in the observations and the reference coordinate systems. For example, the FK4 reference system in 1950.0 coordinates rotates with respect to an inertial system. Details are given for the conversion to the new system.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 56: Reference Coordinate Systems for Earth Dynamics , August 1980 , pp. 305 - 316
Copyright
Copyright © Reidel 1981

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