Sigma Centauri
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| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Centaurus |
| Right ascension | 12h28m02.4s |
| Declination | −50°13′50″ |
| Apparent magnitude (V) | +3.91 |
| Characteristics | |
| Spectral type | B2V |
| U-B color index | −0.78 |
| B-V color index | −0.19 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +8 km/s |
| Proper motion (μ) | RA: −32.49 mas/yr Dec.: −12.41 mas/yr |
| Parallax (π) | 7.36 ± 0.67 mas |
| Distance | 443 ly (136 pc) |
| Absolute magnitude (MV) | −1.75 |
| Other designations | |
| Database references | |
| SIMBAD | data |
Sigma Centauri (σ Cen / σ Centauri) is a star in the constellation Centaurus. σ Centauri is a blue-white B-type main sequence dwarf with an apparent magnitude of +3.91. It is approximately 443 light years from Earth.
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