Titlebook: Astrometry of Fundamental Catalogues; The Evolution from O Hans G. Walter,Ojars J. Sovers Book 2000 Springer-Verlag Berlin Heidelberg 2000

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Miriam Barnat,Vanessa K. J?nschlogue in the ICRS (see Sect. 5.1), its optical star positions are transplanted to a coordinate frame that is the closest contemporary approximation to an inertial system. This chapter discusses some of the details of such catalogue links.

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Gabi Reinmann,Eileen Lübcke,Anna HeudorferInternational Celestial Reference Frame, and the Hipparcos Catalogue is its optical realization (IAU 1999). Astrometrically, the ICRF is based on distant extragalactic radio sources that are observed from the Earth by means of VLBI.

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Hipparcos catalogue tie With conventional celestial reference frames,logue in the ICRS (see Sect. 5.1), its optical star positions are transplanted to a coordinate frame that is the closest contemporary approximation to an inertial system. This chapter discusses some of the details of such catalogue links.

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