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Type: galaxy, S0
Mag: B=12.1, V=?
Size: 3.801′ x 1.479′
Synonyms: H II-542
Discovered in 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB."
(Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads R,BM,ELDIFHALO.
G. de Vaucouleurs ("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the NGC 5846 group are NGC 5846, NGC 5813, NGC 5838, NGC 5850 & NGC 5806.
de Vaucouleurs, G. (1975) Nearby groups of galaxies. In: Kuiper, G. (ed) Stars and Stellar Systems. Volume 9: Galaxies and the Universe. Chapter 14, p557.
Brightest members: 5846 ( B(0) = 11.76), 5813 ( B(0) = 12.09), 5838 ( B(0) = 12.14), 5850 ( B(0) = 12.25), 5806 ( B(0) = 12.70).
Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11.9M; 3' x 1' extent; NE-SW-oriented oblong with 13M stellar core; 35' E of 110 VIR and 8' NNE of small 3' pair of unequal stars; EL GAL N5846 to SSE; SP GAL N5854 (12.6M; 2' x 0.5' extent) 40' to NE; soft, small, elongated with brighter center; EL GAL N5864 (12.8M; 1.8' x 0.5' extent) 35' farther NE; faint and small spindle with brighter center; an edge-on spiral."
Observing site: Little Bennett Regional Park
[15h 5m 24s, 2° 6m 0s] Bright, round nucleus, surrounded by an elliptical envelop. B: A0.
The Messier objects
The Bennett objects
The Caldwell list
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