Omicron Cassiopeiae
From Wikipedia, the free encyclopedia
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 00h44m43.5s |
| Declination | +48°17′04″ |
| Apparent magnitude (V) | +4.48 |
| Distance | 910 ± 210 ly (278 ± 63 pc) |
| Spectral type | B5IIIe |
| Other designations | |
22 Cassiopeiae, HR 193, HD 4180, BD+47°183, FK5 25, HIP 3504, SAO 36620, GC 882, ADS 622, CCDM J00447+4817 | |
Map of the Bayer-designated stars in Cassiopeia. Omicron Cassiopeiae is circled.
Omicron Cassiopeiae (ο Cas, ο Cassiopeiae) is a triple star system in the constellation Cassiopeia. It is approximately 910 light years from Earth.
The primary component, ο Cassiopeiae A, is a blue-white B-type giant with a mean apparent magnitude of +4.54. It is classified as a Gamma Cassiopeiae type variable star and its brightness varies from magnitude +4.50 to +4.62. The primary is a spectroscopic binary, and its close companion completes one orbit every 2.83 years. A more distant companion, ο Cassiopeiae B, lies 33.6 arcseconds away. It is an eleventh magnitude, yellow-white F-type main sequence dwarf.
| ||||||||||||||||||||||||||
This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.