4 Centauri
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 13h 53m 12.54s[1] |
| Declination | −31° 55′ 39.4″[1] |
| Apparent magnitude (V) | +4.75 |
| Characteristics | |
| Spectral type | B4IV |
| U−B color index | −0.54 |
| B−V color index | −0.14 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +5 km/s |
| Proper motion (μ) | RA: -12.72 ± 0.68[1] mas/yr Dec.: -9.48 ± 0.57[1] mas/yr |
| Parallax (π) | 5.12 ± 0.70[1] mas |
| Distance | approx. 640 ly (approx. 200 pc) |
| Absolute magnitude (MV) | −1.80 |
| Other designations | |
| Database references | |
| SIMBAD | data |
4 Centauri is a star in the constellation Centaurus. It is a blue-white B-type subgiant with an apparent magnitude of +4.75 and is approximately 640 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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