sponsored by psychohistorian.org
RA: 23h 28m 54.95s
Dec: +17° 18′ 31.1″
Ch: MSA:1208, U2:169, SA:17
Type: galaxy (in pair), S0
Mag: B=14.2, V=?
Size: 1.513′ x 1′
NGC 7681. CGCG, RNGC, and UGC all chose the wrong galaxy in spite of the very good NGC position (from two determinations by John Herschel). This is even more curious as the correct galaxy is a full magnitude brighter and twice as large as the one they all chose. Furthermore, the description in the NGC mentions the double star following the nebula: there is none following the wrong galaxy, but there is a clear double just north-following the correct object. The identification is unambiguous.
Synonyms: H II-242
Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "F, S, iR, near and preceding 2 or 3 stars."
The RNGC (Sulentic and Tifft 1973) notes that this is a 15.0 mag galaxy. Their coded description reads SO),R,DIF,SMBM.
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.