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Type: galaxy (in group), SBa
Mag: B=15.5, V=?
Size: 2.398′ x 1.174′
Synonyms: H II-231
Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "F, pL, E in the direction of the parallel of declination, contains a stellar nebula or star."
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads S,EL,BM,HISBCT,MINC DKLN S SIDE.
POSS: pa75. no brtr area SE or SW, unless this is -70 (25cm). m13.5 * is at
2'.0 in pa65, gx points just barely S of it. core sharply def on S
flank, core sl NE of geom center.
15cm - much lgr and obviously velong compared to -69. 140x: pa70, points S of
m13.5 * NE. length sl longer than distance to this *. halo seems asym:
more rounded on NE end, tapered on SW; flattened on S-facing flank (twd
-70). core vthin, offset sl twd NE end from center; has *ings along it.
BS, 6Sep1989, Anderson Mesa.
25cm - nrly as br as -69. elong NE-SW. broad core w/cen bright band. brtr area
SW. 1'.2x0'.7 overall.
30cm - easy, comparable in brtness to -69. elong pa45. ENE 2' is m12 *. obj SW
1'.1 is -70? (yes)
The Messier objects
The Bennett objects
The Caldwell list
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