HD 129456
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 43m 39.44s |
| Declination | −35° 10′ 25.2″ |
| Apparent magnitude (V) | +4.06 |
| Characteristics | |
| Evolutionary stage | red giant branch |
| Spectral type | K3III |
| U−B color index | +1.53 |
| B−V color index | +1.356 |
| Variable type | none |
| Astrometry | |
| Radial velocity (Rv) | −38 km/s |
| Proper motion (μ) | RA: −61.46±0.15 mas/yr Dec.: −176.84±0.14 mas/yr |
| Parallax (π) | 15.57±0.16 mas |
| Distance | 209 ± 2 ly (64.2 ± 0.7 pc) |
| Absolute magnitude (MV) | −0.20 |
| Details | |
| Mass | 1.23 M☉ |
| Radius | 25 R☉ |
| Luminosity | 174 L☉ |
| Surface gravity (log g) | 1.86 cgs |
| Temperature | 4,240 K |
| Metallicity [Fe/H] | −0.20 dex |
| Other designations | |
| HR 5485, HD 129456, CD−34°9868, FK5 544, HIP 72010, SAO 205871, GC 19820 | |
| Database references | |
| SIMBAD | data |
HD 129456, also known by its Bayer designation c1 Centauri (c1 Cen), is a star in the constellation Centaurus. c¹ Centauri is an orange K-type giant with an apparent magnitude of +4.06. It is approximately 209 light years from Earth.