Abstract
A celestial reference frame is based on some dynamical or kinematic approximation of an absolute coordinate system and is materialized by a fundamental catalogue of stars. It is characterized by the accuracy of the system and the precision of its stellar realization.
The present situation, marked by the construction of the FK5 system and catalogue, is briefly described. It will be an hybrid system based on the discussion of all existing observations. The prospects for improvement in accuracy are good using lunar laser observations or VLBI determination of the positions of extra-galactic radio-sources. Three procedures that may be used to link such a system to a star catalogue are given. A major improvement in precision is expected from the Ripparcos programme and further extensions include essentially the densification of catalogues with stars of magnitudes 10 to 14 using photoelectric automatic meridian instruments.
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© 1981 D. Reidel Publishing Company, Dordrecht, Holland
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Kovalevsky, J. (1981). Celestial Reference Frames. In: Gaposchkin, E.M., Kołaczek, B. (eds) Reference Coordinate Systems for Earth Dynamics. Astrophysics and Space Science Library, vol 86. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8456-1_7
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DOI: https://doi.org/10.1007/978-94-009-8456-1_7
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