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Problems of Using Hipparcos Astrometry of Double Stars

Published online by Cambridge University Press:  12 April 2016

S.E. Urban ,
T.E. Corbin ,
G.L. Wycoff  and
B.D. Mason
S.E. Urban
Affiliation:
U.S. Naval Observatory, Washington DC
T.E. Corbin
Affiliation:
U.S. Naval Observatory, Washington DC
G.L. Wycoff
Affiliation:
U.S. Naval Observatory, Washington DC
B.D. Mason
Affiliation:
U.S. Naval Observatory, Washington DC

Abstract

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The current optical realization of the International Celestial Reference System is the Hipparcos main catalog in its entirety. This paper demonstrates that a subset of the main catalog stars — specifically those marked as double (“C” stars), acceleration solution (“G”), variability induced movers (“V”), and stochastic solution stars (“X”) — is of much lower quality than the majority of the catalog. Stars marked as suspected doubles (“S”) were investigated and found to show few problems. The authors have put forth a resolution (Resolution 2, this conference) to remove the C, G, V, and X stars, in addition to the Hipparcos orbit stars (“O stars”), from the optical realization of the reference frame.

Type
Section 1. Celestial Reference System and Frame
Information
International Astronomical Union Colloquium , Volume 180: Towards Models and Constants for Sub-Microarcsecond Astrometry , March 2000 , pp. 97 - 103
Copyright
Copyright © US Naval Observatory 2000

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