SIMBAD query result

Please have a look at the "Dictionary of Nomenclature"

Result of query: info cati BDN 31.57 5.37

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 [Class]      Acronym  (Explanation)   . . . . . . . . . in Simbad, use:
 [GalNeb]     BDN (Bernes Dark Neb)  . . . . . . . . . . [B77] ...
 [DarkNeb]    BDN (Bright Dark Nebula) . . . . . . . . . NAME BDN