Astronomy:NGC 6208
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Short description: Open star cluster in the constellation Ara
| NGC 6208 | |
|---|---|
 NGC 6208 (taken from Stellarium) | |
| Observation data (J2000 epoch) | |
| Constellation | Ara |
| Right ascension | 16h 49m 28.(0)s[1] |
| Declination | −53° 43′ 4(2)″[1] |
| Distance | 3,060 ly (939 pc)[2] |
| Apparent magnitude (V) | 7.2[3] |
| Apparent dimensions (V) | 18′[3] |
| Physical characteristics | |
| Estimated age | 1.17[4] Gyr |
| Other designations | C1645-537, Collinder 313, VDBH 198 |
NGC 6208 is an open cluster in the southern constellation of Ara. With an age of 1.17 Gigayears, it is one of the oldest known open clusters.
References
- ↑ 1.0 1.1 Xin, Y.; Deng, L. (February 2005), "Blue Stragglers in Galactic Open Clusters and Integrated Spectral Energy Distributions", The Astrophysical Journal 619 (2): 824–838, doi:10.1086/426681, Bibcode: 2005ApJ...619..824X.
- ↑ Kharchenko, N. V. et al. (August 2005), "Astrophysical parameters of Galactic open clusters", Astronomy and Astrophysics 438 (3): 1163–1173, doi:10.1051/0004-6361:20042523, Bibcode: 2005A&A...438.1163K.
- ↑ 3.0 3.1 Inglis, Mike (2013), Observer's Guide to Star Clusters, The Patrick Moore Practical Astronomy Series, Springer Science & Business Media, p. 27, ISBN 978-1461475675, Bibcode: 2013ogsc.book.....I, https://books.google.com/books?id=ewHABAAAQBAJ&pg=PA27.
- ↑ Piskunov, A. E. et al. (January 2008), "Tidal radii and masses of open clusters", Astronomy and Astrophysics 477 (1): 165–172, doi:10.1051/0004-6361:20078525, Bibcode: 2008A&A...477..165P.
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