HD 129116
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 41m 57.59s[1] |
| Declination | −37° 47′ 37.6″[1] |
| Apparent magnitude (V) | +4.01 |
| Characteristics | |
| Spectral type | B3V |
| U−B color index | −0.70 |
| B−V color index | −0.17 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | +1 km/s |
| Proper motion (μ) | RA: -29.92 ± 0.14[1] mas/yr Dec.: -30.68 ± 0.13[1] mas/yr |
| Parallax (π) | 9.62 ± 0.18 mas[1] |
| Distance | 339 ± 6 ly (104 ± 2 pc) |
| Absolute magnitude (MV) | −0.84 |
| Details | |
| Radius | 2.93 ± 0.12[2] R☉ |
| Surface gravity (log g) | 4.23 ± 0.03[2] cgs |
| Temperature | 18,445 ± 344[2] K |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 129116, also known by its Bayer designation b Centauri (b Cen), is a star in the constellation Centaurus.
b Centauri is a blue-white B-type main sequence dwarf with an apparent magnitude of +4.01. It is approximately 339 light years from Earth.
References
- ^ a b c d e 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
- ^ a b c Fitzpatrick, E. L.; Massa, D. (March 2005), "Determining the Physical Properties of the B Stars. II. Calibration of Synthetic Photometry", The Astronomical Journal, 129 (3): 1642–1662, arXiv:astro-ph/0412542, Bibcode:2005AJ....129.1642F, doi:10.1086/427855
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