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Type: galaxy (in pair), Sa
Mag: B=13.99, V=13.11
Size: 1.174′ x 0.602′
Synonyms: H II-751
Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "Two. The preceding [NGC 5857] cF, cS; the following [NGC 5859] pL; both lE np-sf, but nearer parallel."
Two supernovae erupted in this galaxy; 1950 (18.1p), 1955 (14.5p)
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.5 mag galaxy. Their coded description reads SLEL,DIFWINGS.
Steve Coe, using a 13" f/5.6, notes: "Pretty faint, pretty small, elongated 2X1 in PA 90 and little brighter in the middle at 165X. Nearly in contact with NGC 5859."
RC3: -57: V=13.1/12.1. -58: V=12.5/13.4, pa136(UGC).
15cm - two sim-br gxs 1'.75 apart @ 80x. -59 (SErn of the two) is lgr, sl brtr.
elong SE-NW, 1'.2x0'.6 w/mod even concen. lens-shaped. points sl N of
-57, which is circ, 20" diam, w/mod even concen. tip of -59 reaches 1/2
to 2/3 way to -57. m12,13 pair 5' SE, consp @ 80x. BS, 7Jun1991, Anderson
The Messier objects
The Bennett objects
The Caldwell list
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