Omicron2 Centauri
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation | Centaurus |
| Right ascension | 11h31m48.8s |
| Declination | −59°30′57″ |
| Apparent magnitude (V) | +5.12 |
| Spectral Characteristics | |
| Spectral type | A2Ia |
| U-B color index | −0.11 |
| B-V color index | +0.49 |
| Variable type | α Cyg |
| Astrometry | |
| Radial velocity (Rv) | −17 km/s |
| Proper motion (μ) | RA: −6.59 mas/yr Dec.: 0.67 mas/yr |
| Parallax (π) | 0.96 ± 0.58 mas |
| Distance | 3400 ± 2100 ly (1040 ± 630 pc) |
| Absolute magnitude (MV) | −4.96 |
| Other designations | |
| Database references | |
| SIMBAD | data |
- The correct title of this article is Omicron² Centauri. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
- For other star systems with this Bayer designation, see Omicron Centauri.
Omicron² Centauri (ο² Cen / ο² Centauri) is a star in the constellation Centaurus.
ο² Centauri is a white A-type supergiant with a mean apparent magnitude of +5.12. It is approximately 3400 light years from Earth. It is classified as an Alpha Cygni type variable star and its brightness varies from magnitude +5.12 to +5.22 with a period of 46.3 days.
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