Dictionary of Nomenclature of Celestial Objects

 nd in the literature with the formats    HHMM.mNDDMMA and HHMM.mSDDMMA instead of '+' and '-'.
Superseded by WDS. See also PMSC. Ref:=1963IDS...C......0J byJEFFERS H.M. , VAN DEN BOS W.H., GREEBY F.M. Publ. Lick Obs. 21,part 1,1963, 0-None (1963) Index catalogue of visual double stars, 1961.0. opart 1 (263pp) + part part 2 (804pp). o<IDS HHMMm+DDMMAAAA> N=about 64000.
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