sponsored by psychohistorian.org
RA: 23h 39m 54.2s
Dec: −12° 17′ 31″
Ch: MSA:1328, U2:304, SA:17
Type: galaxies (interacting), Sa
Mag: B=11, V=?
Size: 4.073′ x 3.235′
Synonyms: H I-111
Discovered in 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "cB, cL, iR, gmbM."
This 12th magnitude spiral galaxy is recorded in the NGC as "pretty bright, pretty large, irregularly round, much brighter in the middle."
Burnham adds: "with faint outer arms extending to 5'."
Listed as No. 222 in Arp's "Atlas of Peculiar Galaxies" (Astrophysical Journal Supplement, vol. 14, 1966.) He remarks "amorphous arms."
The RNGC (Sulentic and Tifft 1973) notes that this is a 11.5 mag galaxy. Their coded description reads IRRR,HISBCT,DIFHALO DIF FIL.
Houston notes that this 10.2 mag galaxy can be seen in a 5-inch Moonwatch scope, spanning 2.5'. It is also evident in 20x 5-inch binoculars.
Listed by the Herschel Club, described as "difficult to see, elusive, slight hint of elongation. Situated near a bright field star. 6-inch, 48x."
Steve Coe, using a 17.5" f/4.5, notes: "Pretty faint, round, pretty bright nucleus, averted vision helps the contrast of this galaxy. There is an attendant galaxy about 20' to the West. I believe it is NGC 7724."
Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12M; 5' x 2.5' extent; soft, N-S-oriented blob with brighter center; 14M stellar core; 10M star 9' to W; 40' to SSW is SP GAL N7723."
= Arp 222
POSS: -24 at 11'.8 in pa291.
T&B: four *s w/mags.
15cm - vf, 2'.5 diam. it seems to be a bunch of f *s. BS, Roof.
- whoa! easily the brtst gx so far tonight. a little smlr than -23:
2'x1'.75, vaguely elong ENE-WSW (def not pa30 as per ESGC). classic
vstrong sharp concen to vsm vbr core and vconsp *ar nuc. lies in 10'
circle of six m12.5-13.5 *s. halo seems more extensive on E, and there is
occas disturbance NW of center. BS, 14Oct1990, Anderson Mesa.
25cm - elong, smlr than -23 and a bit brtr. BS, Roof.
30cm - nice at lox. round, well concen smoothly to br non*ar nuc. 2'.8 diam.
hix kills fntr part and changes character: more sharply concen w/sub*ar
nuc. at both hix & lox, I get impression of dk patch just to NE of nuc.
Location: Campsite (23 16 South - 29 26 East).
Telescope: Meade 8" 18mm eyepiece, 36 arcmin f.o.v.
Date: August 1998.
Sky conditions: Not very good.
Description: Fairly bright, round medium size (4arc minutes) with a sudden bright nucleus surrounded with a faint halo. I was particularly struck by the starfield, stars are grouped around the galaxy almost like the digits on the face of a clock.
The Messier objects
The Bennett objects
The Caldwell list
DOCdb is still in beta-release.
Known issues, feature requests, and updates on bug fixes, are here:
Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!
DOCdb is a free online resource that exists to promote deep sky observing.
You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.
Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.