Astronomy:NGC 7686
From HandWiki
Short description: Open cluster in the constellation Andromeda
| NGC 7686 | |
|---|---|
 NGC 7686 (taken from Stellarium) Credit: Roberto Mura | |
| Observation data (J2000 epoch) | |
| Constellation | Andromeda |
| 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 designations | Cr 456, C2327+488, Herschel VII69[2] |
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
- ↑ 1.0 1.1 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, doi:10.1051/0004-6361/201322302, Bibcode: 2013A&A...558A..53K.
- ↑ 2.0 2.1 2.2 2.3 Inglis, Mike (2013), Observer's Guide to Star Clusters, Springer Science & Business Media, p. 14, ISBN 978-1461475675, Bibcode: 2013ogsc.book.....I, https://books.google.com/books?id=ewHABAAAQBAJ&pg=PA14
- ↑ 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.
External links
- http://seds.org
- NGC 7686 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
Coordinates: 
23h 30m 18s, +49° 08′ 00″
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