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COMMISSION 8: ASTROMETRY

Published online by Cambridge University Press:  01 December 2008

Irina I. Kumkova ,
Dafydd Wyn Evans ,
Imants Platais ,
Alexandre H. Andrei ,
Alain Fresneau ,
Petre P. Popescu ,
Ralf-Dieter Scholz ,
Mitsuru Soma ,
Norbert Zacharias  and
Zi Zhu
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Van Leeuwen has completed and published the new reduction of the Hipparcos data. Parallax accuracies have improved by up to a factor five for the brightest stars and correlations effectively removed.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Transactions T27A: Transactions IAU , December 2008 , pp. 23 - 33
Copyright
Copyright © International Astronomical Union 2009