Messier 107
| Messier 107 | |
|---|---|
| 280px | |
| Observation data (J2000 epoch) | |
| Class | X[1] |
| Right ascension | 16h 32m 31.86s[2] |
| Declination | –13° 03′ 13.6″[2] |
| Distance | 20.9 kly (6.4 kpc)[3] |
| Apparent magnitude (V) | +8.85[4] |
| Apparent dimensions (V) | 13′.0 |
| Physical characteristics | |
| Mass | 1.82×105[3] M☉ |
| Radius | 39.5 ly[5] |
| Metallicity | –0.95[6] dex |
| Estimated age | 13.95 Gyr[6] |
| Other designations | NGC 6171, GCl 44[4] |
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Wikimedia Commons has media related to Messier 107. |
Globular Cluster M107 (also known as Messier Object 107 or NGC 6171) is the last globular cluster in the Messier Catalogue. It is a very loose globular cluster in the constellation Ophiuchus. It was discovered by Pierre Méchain in April 1782 and independently by William Herschel in 1793. It wasn't until 1947 that Helen Sawyer Hogg added it and three other objects discovered by Méchain to the list of Messier objects.
M107 is close to the galactic plane at a distance of about 20,900 light-years from Earth.[3] There are 25 known variable stars in this cluster.
Contents
Gallery
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The globular star cluster Messier 107.jpg
The globular star cluster Messier 107 image taken by the Wide Field Imager (WFI) on the MPG/ESO 2.2-metre telescope.
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M107map.png
Map showing the location of M107.
See also
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ distance × sin( diameter_angle / 2 )=39.5 ly. radius
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
External links
- SEDS Messier pages: Messier 107
- Messier 107, Galactic Globular Clusters Database page
- Messier 107 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
16h 32m 31.91s, −13° 03′ 13.1″
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