| NGC 6866 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Right ascension | 20h 3.7m [1] |
| Declination | +44° 00′[1] |
| Distance | 3900 ly (1450 pc) |
| Apparent magnitude (V) | 7.6 |
| Apparent dimensions (V) | 7' |
| Physical characteristics | |
| Estimated age | 0.43 ± 0.05 Gyr |
| Other designations | Cr 412, C2002+438, OCL 183 |
| Associations | |
| Constellation | Cygnus |
NGC 6866 is an open cluster in the constellation Cygnus. It was discovered by Caroline Herschel on 23 July 1783.
NGC 6866 is located in what was the field of view of the Kepler spacecraft. Using asteroseismic analysis, the age of NGC 6866 was estimated to be about 430 million years old.[2]
- ^ a b "NGC 6866". Results for NGC 6866. Retrieved 2008-09-29.
- ^ Brogaard, K.; Arentoft, T.; Miglio, A.; Casali, G.; Thomsen, J. S.; Tailo, M.; Montalbán, J.; Grisoni, V.; Willett, E.; Stokholm, A.; Grundahl, F.; Stello, D.; Sandquist, E. L. (2023). "Asteroseismic age estimate of the open cluster NGC 6866 using Kepler and Gaia". Astronomy & Astrophysics. 679: A23. arXiv:2308.12731. Bibcode:2023A&A...679A..23B. doi:10.1051/0004-6361/202347330.