Some Aspects of Relativistic Astrometry from Within the Solar System

In this article we outline the structure of a general relativistic astrometric model which has been developed to deduce the position and proper motion of stars from 1 µarcsecond optical observations made by an astrometric satellite orbiting around the Sun. The basic assumption of our model is that t...

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Bibliographic Details
Published in:Celestial mechanics and dynamical astronomy 2003-09, Vol.87 (1-2), p.209-218
Main Authors: Crosta, M T, Vecchiato, A, de Felice, F, Lattanzi, M G, Bucciarelli, B
Format: Article
Language:English
Subjects:
Solar system
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Summary:In this article we outline the structure of a general relativistic astrometric model which has been developed to deduce the position and proper motion of stars from 1 µarcsecond optical observations made by an astrometric satellite orbiting around the Sun. The basic assumption of our model is that the Solar System is the only source of gravity, hence we show how we modeled the satellite observations in a many-body perturbative approach limiting ourselves to the order of accuracy of (v/c)^sup 2^. The microarcsecond observing scenario outlined is that for the GAIA astrometric mission.[PUBLICATION ABSTRACT]
ISSN:0923-2958
1572-9478
DOI:10.1023/A:1026136012485