NGC 6208

NGC 6208
NGC 6208
	NGC 6208 (taken from Stellarium)
Observation data (J2000 epoch)
Right ascension	16h 49m 28.(0)s
Declination	−53° 43′ 4(2)″
Distance	3,060 ly (939 pc)
Apparent magnitude (V)	7.2
Apparent dimensions (V)	18′
Physical characteristics
Estimated age	1.17 Gyr
Other designations	C1645-537, Collinder 313, VDBH 198
Associations
Constellation	Ara
	See also: Open cluster, List of open clusters

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

^ ^a ^b Xin, Y.; Deng, L. (February 2005), "Blue Stragglers in Galactic Open Clusters and Integrated Spectral Energy Distributions", The Astrophysical Journal, 619 (2): 824–838, arXiv:astro-ph/0410325, Bibcode:2005ApJ...619..824X, doi:10.1086/426681, S2CID 2087723.
^ Kharchenko, N. V.; et al. (August 2005), "Astrophysical parameters of Galactic open clusters", Astronomy and Astrophysics, 438 (3): 1163–1173, arXiv:astro-ph/0501674, Bibcode:2005A&A...438.1163K, doi:10.1051/0004-6361:20042523, S2CID 9079873.
^ ^a ^b Inglis, Mike (2013), Observer's Guide to Star Clusters, The Patrick Moore Practical Astronomy Series, Springer Science & Business Media, p. 27, Bibcode:2013ogsc.book.....I, ISBN 978-1461475675.
^ Piskunov, A. E.; et al. (January 2008), "Tidal radii and masses of open clusters", Astronomy and Astrophysics, 477 (1): 165–172, Bibcode:2008A&A...477..165P, doi:10.1051/0004-6361:20078525.

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NGC	NGC 6203 NGC 6204 NGC 6205 NGC 6206 NGC 6207 NGC 6208 NGC 6209 NGC 6210 NGC 6211 NGC 6212 NGC 6213
Collinder	Collinder 309 Collinder 310 Collinder 311 Collinder 312 Collinder 313 Collinder 314 Collinder 315 Collinder 316 Collinder 317