Sigma Centauri
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Centaurus |
| Right ascension | 12h 28m 02.38s[1] |
| Declination | −50° 13′ 50.3″[1] |
| 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: -32.36 ± 0.15[1] mas/yr Dec.: -12.51 ± 0.13[1] mas/yr |
| Parallax (π) | 7.92 ± 0.18[1] mas |
| Distance | 412 ± 9 ly (126 ± 3 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 412 light years from Earth.
References
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