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Accuracy Predictions and Final Prospects for the HIPPARCOS Mission

Published online by Cambridge University Press:  30 March 2016

L. Lindegren  and
J. Kovalevsky
L. Lindegren
Affiliation:
Lund ObservatoryBox 43, S-22100 Lund, Sweden
J. Kovalevsky
Affiliation:
Observatoire de la Côte d’AzurCERGA, Avenue Copernic, F-06130 Grasse, France

Abstract

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The pre-launch accuracy prediction for the Hipparcos mission is reviewed with regard to the observed performance and expected lifetime of the satellite in its present orbit. Given the excellent quality of the data it is likely that the target accuracy of 2 milli-arcsec for typical programme stars can be achieved if operations continue at least until the end of 1993. We emphasize that any extension of the operational lifetime beyond that point strongly enhances the scientific value of the results.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 425 - 428
Copyright
Copyright © Kluwer 1992

References

[1] Perryman, M.A.C., Lindegren, L., Murray, C.A., Høg, E. and Kovalevsky, J. (1989), The Hipparcos Mission, ESA SP-1111, Vol. III, European Space Agency, Noordwijk, Chapter 18.Google Scholar
[2] Kovalevsky, J., Petersen, C., van der Marel, H. and Donati, F. (1991), Performances of the Hipparcos data reduction on the great circle, this volume.Google Scholar
[3] Lindegren, L., van Leeuwen, F., Petersen, C., Perryman, M.A.C. and Söderhjelm, S. (1991), Positions and parallaxes from the Hipparcos satellite: A first attempt at a global astrometric solution, Astronomy fe Astrophysics (in press).Google Scholar