NGC 6316
NGC 6316 is a globular cluster located in the constellation Ophiuchus. Its Shapley-Sawyer Concentration Class is III, meaning that it has a "strong inner core of stars" and was discovered by the German-born British astronomer William Herschel on 24 May 1784. It is at a distance of about 35,900 light years away from the Earth.[4][5] NGC 6316 has a metallicity of -0.45;[3] this means that its ratio of hydrogen/helium to other elements is only 35% that of the Sun, but still enough to be considered a "metal-rich" globular cluster.[6]
| NGC 6316 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Class | III[1] |
| Constellation | Ophiuchus |
| Right ascension | 17h 16m 37.42s[2] |
| Declination | −28° 08′ 24.0″[2] |
| Distance | 33,900 ly (10,400 pc)[1] |
| Apparent magnitude (V) | 9.03[2] |
| Apparent dimensions (V) | 4.9′ × 4.9′[1] |
| Physical characteristics | |
| Metallicity | = -0.45[3] dex |
| Notable features | Relatively metal-rich globular cluster |
| Other designations | GCl 57, VDBH 219[2] |
References
- Hartmut Frommert. "NGC 6316 - Hartmut Frommert - SEDS". SEDS. Retrieved 6 February 2017.
- "NGC 6136". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 6 February 2017.
- William E. Harris. "Catalog of Parameters for Milky Way Globular Clusters". Retrieved 3 February 2017.
- "NGC 6316 (= GCL 57)". cseligman. Retrieved 4 October 2015.
- "The globular cluster NGC 6316". In-the-sky. Retrieved 4 October 2015.
- Layden, Andrew C.; Bowes, Benjamin T.; Welch, Douglas L.; Webb, Tracy M. A. (2003). "Variable Stars in Metal-Rich Globular Clusters. II. NGC 6316". The Astronomical Journal. 126 (1): 255–264. arXiv:astro-ph/0304077. Bibcode:2003AJ....126..255L. doi:10.1086/375651.
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