NGC_6208 Knowpia

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 edit

^ ^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.