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Link between Hipparcos and VLBI Celestial Reference Frames

Published online by Cambridge University Press:  12 April 2016

E.F. Arias  and
J.-F. Lestrade
E.F. Arias
Affiliation:
(Facultad de Cs. Astronomicas y Geofisicas de La Plata, CONICET, Central Bureau of IERS)
J.-F. Lestrade
Affiliation:
(Observatoire de Paris, Central Bureau of IERS)

Abstract

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The celestial frame of HIPPARCOS astrometric satellite will be materialized by the positions and proper motions of about 120000 stars relative to arbitrary origins. As the HIPPARCOS reference frame is not naturally related to fixed directions in space, it has to be linked to an inertial frame of similar quality. The technique of VLBI determines the coordinates of extragalactic radio sources precise at the milliarcsecond level in an equatorial frame. The precision expected for HIPPARCOS normal mission is 0.002ʺ for the positions, yearly proper motions and parallaxes.

Type
Part 2. Poster Papers
Information
International Astronomical Union Colloquium , Volume 127: Reference Systems , 1991 , pp. 202 - 205
Copyright
Copyright © United States Naval Observatory 1991

References

Lestrade, J.-F., Preston, R.A., Slade, M.A. 1982: Very Long Baseline Interferometry techniques, Biraud, F. (ed.), CNES, p. 199.Google Scholar
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White, G.W., Lestrade, J.-F., Jauncey, D.L., Philips, R.B., Preston, R.A., Reynolds, J.E. 1990: Astron. J., 99, 1005.CrossRefGoogle Scholar