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RA: 15h 57m 30.78s
Dec: +15° 57′ 21.6″
Ch: MSA:691, U2:200, SA:15
Type: galaxy (in pair), E
Mag: B=14.1, V=?
Size: 1.445′ x 0.831′
Synonyms: H III-073
Discovered on 21 March 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "eF, vS, easily verified with 240 power."
The RNGC (Sulentic and Tifft 1973) notes that this is a 14.0 mag galaxy. Their coded description reads E,R,BM,CHAINLIKE GRP.
Buta & Corwin (1986, Ap.J.Supp 62, p255-281) lists NGC 6021 as a member of the Hercules Supercluster (CGCG Field 108).
The Messier objects
The Bennett objects
The Caldwell list
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