NGC 6819
Open cluster in the constellation Cygnus
From Wikipedia, the free encyclopedia
NGC 6819, also known as The Foxhead[2] is an open cluster (commonly known as an "open star cluster") located 7,200 light years away in the Cygnus constellation. It was discovered by Caroline Herschel on 12 May 1784.
| NGC 6819 | |
|---|---|
Credit: Tom Wildener | |
| Observation data (J2000 epoch) | |
| Right ascension | 19h 41m 18.0s[1] |
| Declination | +40° 11′ 12″[1] |
| Distance | 7,200 ly |
| Apparent magnitude (V) | 7.3[1] |
| Apparent dimensions (V) | 5' |
| Physical characteristics | |
| Other designations | Collinder 403 |
| Associations | |
| Constellation | Cygnus |
Situated on the boundary of Cygnus and Lyra, NGC 6819 contains roughly two dozen stars of magnitude 10 to 12, with many more lower magnitude members.[3]
The age of NGC 6819 is estimated here to be ~ 2.5 ± 0.5 Gyr.[4] Its distance is calculated to be 2.16 ± 0.57 kpc.[5]
