NGC 189 is an open cluster in the Cassiopeia constellation. It was discovered by Caroline Herschel on 27 September 1783, and independently rediscovered by John Herschel on 27 October 1829.[3]
| NGC 189 | |
|---|---|
NGC 189 from DSS
| |
| Observation data (J2000 epoch) | |
| Right ascension | 0h 39m 28.8s[1] |
| Declination | +61° 6m54s[1] |
| Distance | 4,200 ly (1,300 pc)[1] |
| Apparent magnitude (V) | 8.8[2] |
| Apparent dimensions (V) | 0.120°[1] |
| Physical characteristics | |
| Estimated age | 510 Myr[1] |
| Other designations | Cr 462, C 0036+608, OCL 301 |
| Associations | |
| Constellation | Cassiopeia |
| See also: Open cluster, List of open clusters | |
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