<b>Field 20</b>: Proper motion in right ascension (equinox J2000.0)
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The proper motion in right ascension, 
,
is expressed in units of arcsec per year. The equinox is
J2000.0. The proper motion is given in the system of the FK5 whenever
the necessary information was available.
The Meudon Hipparcos Input Catalogue Team
mer 16 nov 15:51:31 MET 1994