411 REFERENCE · Wikibooks
Messier Index/M107
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Messier 107 280px M107 from w:Hubble Space Telescope; 3.5′ view w:NASA/w:STScI/w:WikiSky w:J2000 X w:Ophiuchus 16 32 31.91SIMBAD Astronomical Database
Results for NGC 6171
http://simbad.u-strasbg.fr/Simbad
2006-11-16 -13 03 13.1 20.9 kly 6.4 kpc +8.85 13′.0 39.5 distance × sin( diameter_angle / 2 ) = 39.5 ly. radius NGC 6171, GCl 44
Messier 107
Globular Cluster M107 (also known as w:Messier Object 107 or NGC 6171) is a very loose w:globular cluster in the w:constellation w:Ophiuchus. It was discovered by w:Pierre Méchain in April w:1782 and independently by w:William Herschel in w:1793. It wasn't until w:1947 that w:Helen Sawyer Hogg added it and three other objects discovered by Méchain to the list of Messier objects.
M107 is close to the w:galactic plane at a distance of about 20,900 w:light-years from w:Earth. There are 25 known w:variable stars in this cluster.
External links
SEDS Messier pages: Messier 107
Messier 107, Galactic Globular Clusters Database page
References