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Astrometric and Astrophysical Insights into the Hipparcos Data Quality

Published online by Cambridge University Press:  07 August 2017

M.A.C. Perryman
M.A.C. Perryman*
Affiliation:
Astrophysics Division, European Space Agency ESTEC, 2200AG Noordwijk, The Netherlands

Abstract

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Internal error estimates and external verifications indicate that median errors for the 120000 stars in the Hipparcos Catalogue, for each of the five astrometric parameters, will be in the range 1–1.5 mas. This paper illustrates some of the statistical investigations that have been conducted so far, including comparisons with catalogues of ground-based positions and proper motions, the structure of the Hertzsprung-Russell diagram, results of the reanalysis of meridian circle and photographic plate data using the positions determined from the satellite, and expected results on double and multiple stars and photometric variability.

Type
1. Current Advances in Astrometry
Information
Symposium - International Astronomical Union , Volume 166: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry , 1995 , pp. 83 - 86
Copyright
Copyright © Kluwer 1995 

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