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RA: 22h 00m 41.26s
Dec: +17° 44′ 16.5″
Ch: MSA:1212, U2:166, SA:17
Type: galaxy (AGN LINER-type), Sab
Mag: B=12.2, V=?
Size: 3.09′ x 2.041′
Synonyms: H II-247
Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, R, bM, 1' diameter."
Two supernovae erupted in this galaxy; 1960 (16.0p), 1976 (16.5v)
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads S,SLEL,HISBCT WKDIFPERIPH SSTR.
Sidney van den Bergh (1961, Astronomical Journal, Vol 66) notes that this galaxy could be a radio source. He remarks: "Isolated Sb. Has peculiar outer arm."
Rick Raasch writes in "The Focal Point", Volume 6, No. 2 (1993) "A small, moderately bright galaxy, 3' X 1' in size, oriented NE-SW. It has a definite central bulge about 1' in diameter, a stellar nucleus, and is broadly concentrated to the center."
Steve Coe, using a 13.1" f/5.6, notes: "NGC 7177 Pretty bright, pretty large, somewhat elongated, much brighter in the middle at 135X."
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12M; 2.3' x 1.3' extent; small, faint, ENE-WSW-oriented oblong with much brighter center and stellar nucleus; 12.5M star 4' S and a little W."
NGC 7177 Donald J. Ware:"A small, moderately bright galaxy, 3'x1' in size, oriented NE-SW. It has a definite central bulge about 1' in diameter, a stellar nucleus, and is broadly concentrated to the center."
POSS: m12.5 * SSW 1'.34; m14.5 * 1'.77 SE. symmetrical thin-armed spiral in
15cm - sm but br @ 50x w/m13 * on S. 165x: oval in pa75, 1'.3x1'. mod even
concen except m13.5 *ar nuc. modhisfcbr overall. core nrly circ, 0'.6
across. m13 * @ 1'.75 in pa200. m15 * forms triangle w/gx and m13 *. BS,
1Jul1989, Anderson Mesa.
25cm - fairly br. elong in pa135, oval 1'.5x0'.75. core like a f dbl *, nrly
*ar. smooth haze. core mod distinct from halo. SSW 2' is m12.5 *. review:
30cm - nice obj. *ar nuc shines at 149x w/same mag as * 1' S. elong pa55. 238x:
nuc not *ar but core seems elong contrary to halo w/pa30. perhaps more
def on N edge. 1'.9x0'.8. smooth.
The Messier objects
The Bennett objects
The Caldwell list
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