<b>Field 51</b>: BD number

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Field 51: BD number

The format is ZZ NNNNa. The last digit of this field is used for additional BD stars, i.e. stars with suffix `a' or `b' (these stars were added to the BD Catalogue after the original numbering was made). Such identifications do not imply that the entry is a component of a double or multiple system.

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