NGC 146
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (August 2016) |
| NGC 146 | |
|---|---|
 Location of NGC 146 | |
| Observation data (J2000 epoch) | |
| Right ascension | 00h 33m 03.9s[1] |
| Declination | +63° 18′ 32″[1] |
| Distance | ~10000 (~3000) |
| Apparent magnitude (V) | 9.1[2] |
| Physical characteristics | |
| Estimated age | <10 Myr |
| Other designations | Cr 5, OCl 299, C 0030+630[2] |
| Associations | |
| Constellation | Cassiopeia |
NGC 146 is a small open cluster in the constellation Cassiopeia. It was discovered by John Herschel in 1829 using his father's 18.7 inch reflecting telescope.[3]
Location
[edit | edit source]
NGC 146 is fairly easy to locate in the sky, being half a degree away from the bright star Kappa Cassiopeiae. However, spotting the cluster itself is difficult because of its low apparent magnitude of 9.1. Its relatively high declination of about 63° means it is not visible for below 27° S. Its distance is estimated at 3030 parsecs (9880 light years ),[4] but may be around 3500 pc (11000 ly) away.[5]
Characteristics
[edit | edit source]The cluster is at most 10 million years old, as there are numerous B-type main sequence stars and pre-main-sequence stars but relatively few evolved supergiants. Among its most massive stars are two Herbig Be stars.[5]
References
[edit | edit source]- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
Further reading
[edit | edit source]- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
