HD 125628
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Centaurus |
| Right ascension | 14h 22m 37.07301s |
| Declination | −58° 27′ 32.8193″ |
| Apparent magnitude (V) | 4.76 (5.09 + 6.94) |
| Characteristics | |
| A | |
| Evolutionary stage | giant |
| Spectral type | G9III |
| B−V color index | +0.795±0.003 |
| B | |
| Evolutionary stage | main sequence |
| Spectral type | F5V |
| B−V color index | +0.45 |
| Astrometry | |
| A | |
| Radial velocity (Rv) | +14.6±2.8 km/s |
| B | |
| Proper motion (μ) | RA: −39.763 mas/yr Dec.: +24.058 mas/yr |
| Parallax (π) | 13.0246±0.0192 mas |
| Distance | 250.4 ± 0.4 ly (76.8 ± 0.1 pc) |
| Details | |
| A | |
| Mass | 2.9 M☉ |
| Radius | 12.3 R☉ |
| Surface gravity (log g) | 2.73 cgs |
| Temperature | 5,370 K |
| Rotational velocity (v sin i) | 5.5 km/s |
| Age | 3.6 Gyr |
| B | |
| Mass | 1.4 M☉ |
| Radius | 2.1 R☉ |
| Luminosity | 7.5 L☉ |
| Surface gravity (log g) | 3.95 cgs |
| Temperature | 6,642 K |
| Rotational velocity (v sin i) | 6.3 km/s |
| Age | 2.7 Gyr |
| Other designations | |
| CPD−57°6619, HD 125628, HIP 70264, HR 5371, SAO 241673 | |
| Database references | |
| SIMBAD | data |
HD 125628 is a binary star system in the constellation Centaurus. It is faintly visible to the naked eye with a combined apparent visual magnitude of 4.76. The distance to this system is approximately 380 light years based on parallax. It is drifting further away from the Sun with a radial velocity of +15 km/s. The absolute magnitude is −0.55.
The primary component of this system, component A, is an aging giant star with a stellar classification of G9III and a visual magnitude of 5.09. The secondary companion, designated component B, is a magnitude 6.94 star located at an angular separation of 9.10″ from the primary, along a position angle of 157°, as of 2016. It is an F-type main-sequence star with a class of F5V.