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RA: 13h 12m 51.8s
Dec: −43° 05′ 48″
Ch: MSA:933, U2:403, SA:21
Type: galaxy (in cluster), S...
Mag: B=12.4, V=11.33
Size: 2.63′ x 2.238′
Discovered by John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "pretty bright, pretty small, round, gradually brighter in the middle; 15 arcseconds; in a curve of 3 or 4 stars." During the next sweep, he recorded it as "pretty bright, round, small, pretty gradually brighter in the middle; 12 arcseconds. In the middle of an arc of four stars." His final observation reads: "pretty faint, small, round. The middle object in an arc of stars."
Burnham calls this a 12.9 mag elliptical galaxy in Centaurus, 0.9' x 0.8', pretty bright, considerably small, round with a bright nucleus.
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 13.0 mag galaxy. Their coded description reads E,R,BM,HISB.
Steve Coe (1992, The Deep-Sky Observer, Webb Society, Issue 1) observing with a 17.5-inch f/4.5 at 100x notes: "B, pS, somewhat elongated, much brighter in the middle."
POSS: closest * at 55" in pa112.
15cm - 150x in dk sky: vis as a sub*ar patch 30" diam. no details.
- first of two mod br sm gxs in 80x fld. 140x: 1'.3x0'.9 elong SE-NW with
strong sharp concen to br core & *ar nuc. two *s nr on both E&W; closest of the four just off ESE edge. BS, 3Mar1990, LCO.
25cm - 180x in dk sky: less than 1' diam. *ar nuc inconsp. three *s to W, one
perhaps inv w/neb.
Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.
This galaxy has the shape of an out of focus marble which is circular in appearance and this galaxy is seen as a vey faint smudge of light at both 57x and 75x.The central nucleus of this galaxy is very condensed and that this galaxy has a soft gently glow of grey-white light.This galaxy measures 3.8'x 3.1'.
The Messier objects
The Bennett objects
The Caldwell list
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