Den Bergh, 1957ApJ...126..323V, then in Arp, 1960ApJ...131..322A, and in Lynga, Catalogue of open cluster, 1979 (C nomenclature).
Other clusters have been found associated with a Van Den Bergh reflexion nebula (ref. 1966AJ.....71..990V), and they have the same numbering as the associated 'VDB NNN'. Auth.:VAN DEN BERGH S.
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