IC 166
| AladinLite | |
| Constellation | Cassiopeia |
|
Position equinox : J2000.0 |
|
|---|---|
| Right ascension | 01 h 52 m 23.8 s |
| declination | + 61 ° 51 ′ 09 ″ |
| Appearance
|
|
| classification | III1r |
| Brightness (visual) | 11.7 mag |
| Angular expansion | 8th |
| Physical data | |
| history | |
| Discovered by | Wilhelm Denning |
| Discovery time | 1890 |
| Catalog names | |
| IC 166 • OCl 334 • | |
IC 166 is the name of an open cluster in the constellation Cassiopeia . The star cluster has an angular extent of 8 '× 8' and an apparent magnitude of 11.7 mag.
The object was discovered by William Frederick Denning in 1890 .