NGC 6539
| NGC 6539 | |
|---|---|
 Globular cluster NGC 6539 | |
| Observation data (2000 epoch) | |
| Class | X:[1] |
| Constellation | Serpens |
| Right ascension | 18h 04m 48.0s |
| Declination | –07° 35′ 00″ |
| Distance | 25.4 kly (7.8 kpc)[2] |
| Apparent magnitude (V) | 9.6 |
| Apparent dimensions (V) | 7.9' |
| Physical characteristics | |
| Mass | 5.36×105[2] M☉ |
| Metallicity | = –0.63[2] dex |
| Other designations | GCL 85 |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
NGC 6539 (also GCL 85) is a globular cluster in the constellation Serpens. It was discovered by Theodor Brorsen in 1856.[3][4]
References
- ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
- ^ a b c Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51.
- ^ Normandin, George. "Globular Star Cluster NGC 6539." Kopernik Space Images. 20 Oct. 2000. 20 June 2008 <http://www.kopernik.org/images/archive/n6539.htm Archived 2006-09-28 at the Wayback Machine.
- ^ Patterson, Bill. "Global CLusters 2007 Gallery." LAAstro. 2007. 20 June 2008 <http://www.laastro.com/Glob2007_spec.html>.
External links
Media related to NGC 6539 at Wikimedia Commons
