Sigma Centauri
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
- 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
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