NGC 7686

NGC 7686
NGC 7686
	NGC 7686 (taken from Stellarium) ; Credit: Roberto Mura
Observation data (J2000 epoch)
Right ascension	23h 29m 41.(3)s
Declination	+49° 10′ 1(2)″
Apparent magnitude (V)	5.6
Apparent dimensions (V)	15′
Physical characteristics
Other designations	Cr 456, C2327+488, Herschel VII69
Associations
Constellation	Andromeda
	See also: Open cluster, List of open clusters

NGC 7686 is a moderately-sized open cluster in the constellation Andromeda, containing about 80 stars.^[2] At magnitude 5.6, it is an easy target for binoculars and small telescopes.^[3]

According to Johnson et al. (1961), the "color-magnitude diagram shows merely a uniform scatter with no significant tendency to show a cluster main sequence". They conclude that this is not actually a star cluster.^[4]

References

^ ^a ^b Kharchenko, N. V.; et al. (2013), "Global survey of star clusters in the Milky Way. II. The catalogue of basic parameters", Astronomy & Astrophysics, 558: A53, arXiv:1308.5822, Bibcode:2013A&A...558A..53K, doi:10.1051/0004-6361/201322302, S2CID 118548517.
^ ^a ^b ^c ^d Inglis, Mike (2013), Observer's Guide to Star Clusters, Springer Science & Business Media, p. 14, Bibcode:2013ogsc.book.....I, ISBN 978-1461475675
^ Dunlop, Storm (2005), Atlas of the Night Sky, Collins, ISBN 978-0-00-717223-8.
^ Johnson, H. L.; et al. (1961), "Galactic clusters as indicators of stellar evolution and galactic structure", Bulletin of the Lowell Observatory, 5 (8): 133–147, Bibcode:1961LowOB...5..133J.