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Deep Sky Observer's Companion – the online database

 

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Entire DOCdb database of 18,816 objects.

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NGC 7177 (16,975 of 18,816)

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NGC 7177

NGC 7177, LEDA 67823, MCG+03-56-003, UGC 11872, II 247, h 2139, GC 4734

RA: 22h 00m 41.26s
Dec: +17° 44′ 16.5″

Con: Pegasus
Ch: MSA:1212, U2:166, SA:17

Ref: SIMBAD

(reference key)

Type: galaxy (AGN LINER-type), Sab

Mag: B=12.2, V=?

Size: 3.09′ x 2.041′
PA: 90°

Historical observations

William Herschel (c.1784)

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."

Published comments

Supernovae

Two supernovae erupted in this galaxy; 1960 (16.0p), 1976 (16.5v)

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy. Their coded description reads S,SLEL,HISBCT WKDIFPERIPH SSTR.

Van den Bergh, S. (1961)

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."

Modern observations

Raasch, Rick (1993)

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

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

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."

Ware, Donald J

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."

Brian Skiff

POSS: m12.5 * SSW 1'.34; m14.5 * 1'.77 SE. symmetrical thin-armed spiral in

pa90.

UGC: pa90.

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:

pa110.

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.

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