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NGC 4933
NGC 4933, II 191, GC 3377
History and Accurate Positions for the NGC/IC Objects (Corwin 2004)
NGC 4933. This has two components, the brighter one to the northeast. Bigourdan misidentified his comparison star one of the two nights he observed this, so the two components have IC numbers, I4173 and I4176, as well.
The misidentified star led Bigourdan to believe that he had found a third "nova" in the field, too. See IC 4134 = NGC 4920 for the details.
Historical observations
William Herschel (c.1784)
Synonyms: H II-191
Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pF, pS, R, r, near some small stars."
Published comments
Arp (1966)
Listed as No. 176 in Arp's "Atlas of Peculiar Galaxies" (Astrophysical Journal Supplement, vol. 14, 1966.) He remarks "companion galaxy very condensed."
Modern observations
Steve Coe
Steve Coe, observing with a 13" f/5.6, notes: "faint, pretty small, elongated 2X1, brighter middle at 135X. There is a knot in the arm or a companion in the western arm."
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Favourite lists
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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