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Relativistic Modellingof Positional Observationswith Microarcsecond Accuracy

Published online by Cambridge University Press:  25 September 2002

O. Bienaymé ,
C. Turon  and
S. A. Klioner
S. A. Klioner*
Affiliation:
Lohrmann Observatory, Dresden Technical University, 01062 Dresden, Germany
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Abstract

The problem of relativistic modelling of GAIA observations isreviewed. Basic principles of the relativistic model and its overallstructure are described in detail. All relativistic effects which mayamount to 1 μas are revealed and discussed. It is argued thatrelativistic definitions of astrometric parameters (position,parallax, proper motion, radial velocity, etc.) consistent with anaccuracy of 1 μas should be considered only within a well-definedalgorithm of relativistic reduction of observational data.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 2: GAIA: A European Space Project , 2002 , pp. 93 - 106
Copyright
© EAS, EDP Sciences, 2002

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