BONNER DURCHMUSTERUNG

(BD) English Bonn Survey star catalog showing the positions and apparent magnitudes of 324,188 northern stars. Compiled at Bonn under the direction of the German astronomer F.W.A. Argelander, it required 25 years' work and was published in 185962. The accompanying charts, published in 1863, were the most complete and accurate made until that time. The catalog was reissued in 1950. See also Crdoba Durchmusterung.