Harold Corwin

IC 1111 = NGC 5876 with a +5 minute error in the RA. Swift calls the object "pB" and notes that it makes a "triangle with 2 stars." The stars are 2 arcmin northwest and 2.5 arcmin southwest. Interestingly, NGC 5876 was one of Swift's earliest discoveries, and was included by him in his first list of new nebulae.

CGCG chose a considerably fainter galaxy (UGC 9800 = CGCG 274-037) as IC 1111. This galaxy is indeed closer to Swift's position, but the differences are not simple digits -- 1m 38s, and 2.7 arcmin. There are also no stars nearby that Swift would have noted as a triangle with the galaxy.

Unfortunately, this error has propagated through the catalogues, so UZC, LEDA, and Wolfgang Steinicke (in his first NGC/IC edition) have incorrectly put the IC number on the fainter object.

― IC Notes by Harold Corwin

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