Hostname: page-component-857557d7f7-bvshn Total loading time: 0 Render date: 2025-12-08T20:16:15.581Z Has data issue: false hasContentIssue false
  • English
  • Français

Modelling the Hipparcos Attitude

Published online by Cambridge University Press:  15 February 2011

C. Turon ,
F. Meynadier ,
F. Arenou  and
F. van Leeuwen
F. van Leeuwen*
Affiliation:
Institute of Astronomy, Cambridge, UK
Get access

Abstract

A detailed study of the Hipparcos attitude exposed events in the satellite’s motion(micro-meteorite hits and clanks) that require special adaptations in the attitudereconstruction modelling. Identifying these events in the data stream, and incorporatingthem in a specially designed dynamical attitude modelling, has led to an overall reductionin the attitude reconstruction noise from 3 mas down to 0.6 mas. Considering that the mainnoise contribution on the astrometric data for stars brighter than magnitude 8 in theHipparcos catalogue originated from the attitude reconstruction, and that this noise ledto correlated parallax errors for neighbouring stars, it was decided to redo theastrometric reductions of the Hipparcos data. This was completed in 2007, and resulted inthe publication of a new catalogue. The lesson to be learnt for Gaia is, thatincorporating a detailed understanding of the satellite’s motions in the attitudemodelling can have a significant impact on the overall reliability of the finalastrometric data produced by the mission.

Information

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 45: GAIA: At the Frontiers of Astrometry , 2010 , pp. 41 - 46
Copyright
© EAS, EDP Sciences 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Références

ESA (ed.), 1997, The Hipparcos and Tycho Catalogues, ESA SP-1200, ESA
Evans, D.W., 2003, in The Future of Small Telescopes In The New Millennium, Vol. II - The Telescopes We Use, 49
Fantino, E., 2000, Ph.D. Thesis, Universita’ degli studi di Padova
Fantino, E., & van Leeuwen, F., 2003, Space Sci. Rev., 108, 499 CrossRef
Kovalevsky, J., Falin, J.L., et al., 1992, A&A, 258, 7
Lindegren, L., 2005, ed. C. Turon, K.S. O’Flaherty, & M.A.C. Perryman, The Three-Dimensional Universe with Gaia, ESA SP-576, 29
Lindegren, L., Hoeg, E., van Leeuwen, F., et al., 1992, A&A, 258, 18
O’Mullane, W., Lammers, U., et al., 2007, ed. R.A. Shaw, F. Hill, & D.J. Bell, Astronomical Data Analysis Software and Systems XVI, Vol. 376 of Astron. Soc. Pac. Conf. Ser., 99
van der Marel, H., & Petersen, C.S., 1992, A&A, 258, 60
van Leeuwen, F., 2007a, Hipparcos, the new reduction of the raw data (Springer, Dordrecht)
van Leeuwen, F., 2007b, A&A, 474, 653 PubMed
van Leeuwen, F., & Fantino, E., 2003, Space Sci. Rev., 108, 537 CrossRef
van Leeuwen, F., & Fantino, E., 2005, A&A, 439, 791