NGC 7686

NGC 7686 is a moderate-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]

NGC 7686
NGC 7686 (taken from Stellarium)
Credit: Roberto Mura
Observation data (J2000 epoch)
ConstellationAndromeda
Right ascension 23h 29m 41.(3)s[1]
Declination+49° 10′ 1(2)″[1]
Apparent magnitude (V)5.6[2]
Apparent dimensions (V)15′[2]
Physical characteristics
Other designationsCr 456, C2327+488, Herschel 69[2]

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
  1. 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.
  2. Inglis, Mike (2013), Observer's Guide to Star Clusters, Springer Science & Business Media, p. 14, Bibcode:2013ogsc.book.....I, ISBN 978-1461475675
  3. Dunlop, Storm (2005), Atlas of the Night Sky, Collins, ISBN 978-0-00-717223-8.
  4. 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.
Map showing location of NGC 7686 (Roberto Mura)


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