NGC 4031 PGC 45255
Uma
☀14.4mag
Ø 72''

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George Johnstone Stoney, Lord Rosse's assistant, discovered NGC 2694 (double system with NGC 2693) on 9 Mar 1850. Multiple observations were made in the next couple of years (13 total) but John Herschel didn't include this nebula in the General Catalog, presumably as no details were given in the 1861 monograph. So, Dreyer added it in the GC supplement (GC 5435).

The CGCG declination is 30' too far south (same error with NGC 2693). RC3 gives the dimensions as 1.2x1.2, but this much too large.

400/500mm - 17.5" (2/8/86): faint, very small, almost round. Forms a close double system with brighter and larger NGC 2693 1' N.

Notes by Steve Gottlieb