sponsored by psychohistorian.org
RA: 21h 56m 56.6s
Dec: −11° 39′ 31″
Ch: MSA:1333, U2:301, SA:17
Type: galaxy (Seyfert 1)
Mag: B=17.3, V=?
Size: 0.691′ x 0.426′
NGC 7158 is a triple star. It is precisely identified by Muller's note "* 9.5 PA = 40 deg, distance = 2.8 arcmin." Both Bigourdan and Howe found the object 0.6 minutes following a typically poor Leander McCormick position, and there it still is on the sky today.
The RNGC (Sulentic and Tifft 1973) notes that this is a galaxy. Their coded description reads USBOVAL.
Steve Coe, using a 13" f/5.6, notes: "Is given as a triple star in NGC 2000. Sure enough, there is a a triple with two members about 9th mag and one 11th at this location. They are separated by about 30 arc seconds in a straight line at 100X. This multiple star system must have been included in the NGC because of its appearance at low power, using 60X this group is nebulous. It is marked as a galaxy on Uranometria 2000."
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.