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Type: galaxy (in pair), S0
Mag: B=11.9, V=?
Size: 3.801′ x 3.63′
Synonyms: H I-128
Discovered in 1786 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "vB, pL, bM."
Doig, P. (1925) Notes on the nebulae and clusters in Webb's 'Celestial Objects for Common Telescopes' (Sixth edition, Vol.ii). Part V. M.N.R.A.S., 36(3), 89.
(Sulentic and Tifft 1973) notes that this is a 11.5 mag galaxy. Their coded description reads E,R,BM.
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).
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.
Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11.5M; 1' diameter; small blob with bright center and 14M stellar nucleus; EL GAL N5846a (13.5M; 30" diameter) 30" due N is a small, soft companion; 10' to ESE is SP GAL N5850 (12M; 2.6' x 2' extent) faint oblong with brighter center just 2' S of two 12M stars; EL GAL N5831 (12.7M; 0.5' diameter) very small and round with little brighter center 45' to WSW."
Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, pretty large, round, much brighter middle at 100X. There are two other galaxies in the field and a nice white and blue double star 5 arcmin west."
This galaxy is visible in the same field as the fainter NGC 5850 as seen with the 15.5" and the 17mm Plossl. NGC 5846 lies in the west of the field of view and is considerably brighter than NGC 5850. It has a bright notch at its northern end, which is either a star or a brighter part of the galaxy.
Observing site: Little Tycho Observatory
[15h 6m 24s, 1° 36m 0s] A faint smudge, a bit brighter in the middle. Spiral? N_5850 was not seen.
Observing site: Little Bennett Regional Park
[15h 6m 24s, 1° 36m 0s] A bright, round, small E0.
The Messier objects
The Bennett objects
The Caldwell list
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