<b>Field 1</b>: CCDM number

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Field 1: CCDM number

The CCDM number is constructed from a mean (approximate) position of the system ( to a precision of 0.1 min, to a precision of 1 arcmin) referred to equinox and epoch J2000.0 (or equinox J2000.0 and the epoch of the original measurement if no proper motion is available).

The Meudon Hipparcos Input Catalogue Team
mer 16 nov 15:51:31 MET 1994