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Astrometry of the solar system: the ground-based observations

Published online by Cambridge University Press:  01 October 2007

J.-E. Arlot
J.-E. Arlot*
Affiliation:
IMCCE, UMR8028 du CNRS, Paris Observatory, UPMC, USTL 77 avenue Denfert-Rochereau, F-75014 paris, France email: arlot@imcce.fr
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Abstract

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The main goal of the astrometry of solar system objects is to build dynamical models of their motions to understand their evolution, to determine physical parameters and to build accurate ephemerides for the preparation and the exploitation of space missions. For many objects, the ground-based observations are still very important because radar or observations from space probes are not available. More, the need of observations on a long period of time makes the ground-based observations necessary. The solar system objects have very different characteristics and the increase of the astrometric accuracy will depend on the objects and on their physical characteristics. The purpose of this communication is to show how to get the best astrometric accuracy.

Keywords

astrometrysolar system: generalephemeridesoccultations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 66 - 73
Copyright
Copyright © International Astronomical Union 2008

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