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Type: galaxy (quasar?), SB:b
Mag: B=13.9, V=?
Size: 1.096′ x 0.776′
Synonyms: H III-636
Discovered in 1787 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "Two [NGC 5992 & NGC 5993] The nf vF, vS, verified with 300 power. The sp discovered with 300 power, eF, S, iF."
The RNGC (Sulentic and Tifft 1973) notes that this is a 14.0 mag galaxy. Their coded description reads S,MBM,NOARMS,SOMEKNS.
The Messier objects
The Bennett objects
The Caldwell list
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