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RA: 20h 48m 42.5s
Dec: −37° 59′ 49″
Ch: MSA:1429, U2:381, SA:23
Type: galaxy, S0
Mag: B=12.21, V=11.28
Size: 2.089′ x 1.737′
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "B, R, pgmbM, 25 arcseconds, follows four stars, of which one is 9m."
vB, vS, apparently a nebulous star with possibly very faint surrounding haze.
vB, S, globular neb, surrounded by a vF atmosphere.
De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm).
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads E,R,BM.
Steve Coe, observing with a 13" f/5.6, notes: "Prety bright, pretty small, round, pretty gradually much brighter in the middle at 135X."
15cm - mod f & vsm @ 80x, making 3' triangle w/m9.5 * NW and m10.5 * ESE. 140x:
~circ, 40" diam or ~sep of m10.5 * and m11.5 * N of it. mod sharp concen
to *ar nuc. modhisfcbr overall. BS, 15Nov1993, LCO.
Alldays (22.50S, 20.12E, 770m).
12-inch f/10 SCT (218x, 346x)
Soft round to oval glow with an outer envelope. I think it is brighter than the suggested magnitude. Sports a strong brighter nucleus. On the immediate west of the galaxy a 13magnitude star can be seen. Four more stars outstanding toward the west, drapes in a N to S direction. Galaxy display a very soft outline and brightens up to a very bright nucleus which made it quite outstanding against the background stars. Four stars arrange in a half moon to the close west.
The Messier objects
The Bennett objects
The Caldwell list
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