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Bonner Durchmusterung Catalog

(BD, Durchmusterung)
(well-known astrometric catalog from late 1800s)

The Bonner Durchmusterung Catalog (Durchmusterung or BD) is a whole-sky catalog of the astrometry and apparent magnitude of stars, assembled at the Bonn Observatory from 1859 to 1903, covering 325,000 stars to an apparent magnitude of 9 to 10.

BDBD+36 2147Bonner Durchmusterung Catalog