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Type: galaxy, Sb
Mag: B=11.9, V=?
Size: 3.981′ x 1.445′
Synonyms: H II-757
Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, S, iR or lE, mbM."
A supernova erupted in this galaxy in 1954 (14.5p)
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads EL,BM,DIFPERIPH.
G. de Vaucouleurs ("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the NGC 5866 Group are NGC 5866, NGC 5907, NGC 5879, NGC 5905 & NGC 5908.
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12.2M; 4' x 1' extent; bright slash with stellar core; axis oriented N-S; 15M star 30" W of core; !good supernova prospect! bright star 7' to NNW is 7M SAO 29427."
Houston notes that this 11th mag galaxy can be seen in a-inch only on the clearest nights, whereas an 8-inch should show it regularly.
POSS: pa0. * NW 40" in pa295. br * ~7'.5 NW (SAO 29427).
15cm - marginally seen. Roof.
- modf, elong N-S, vf *ar nuc. cen quite a bit brtr than halo. 125x. BS, 6Jun1981, Slate Mtn.
25cm - pa5, 1'.5x0'.5. nrly circ cen br part 0'.25 across. vthin string of beads along maj axis, looking like br spot in equ dk lane. Roof.
- 190x: 1'.5x0'.5 in pa5. core brtr w/hisfcbr, somewhat more elong than halo, which spreads over lg area at losfcbr level. W and a little N is m14.5 *. f *ar nuc. interesting obj. BS, 6Jun1981, Slate Mtn.
30cm - thin little galaxy, 2'.5x0'.8 in p0. thin core w/non*ar nuc. fairly extensive halo w/irreg edges. just SE of m7.5 *.
Observing site: Little Bennett Regional Park
[15h 9m 48s, 57° 0m 0s] Nice galaxy, 2:3 elongation, Sb? Wikipedia: SBc
The Messier objects
The Bennett objects
The Caldwell list
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