HD 125442
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lupus |
| Right ascension | 14h 20m 42.58071s |
| Declination | −45° 11′ 13.4190″ |
| Apparent magnitude (V) | 4.78 |
| Characteristics | |
| Spectral type | F0 IV |
| B−V color index | 0.310±0.003 |
| Astrometry | |
| Radial velocity (Rv) | +0.0±3.7 km/s |
| Proper motion (μ) | RA: +37.33 mas/yr Dec.: −72.81 mas/yr |
| Parallax (π) | 22.1448±0.3265 mas |
| Distance | 147 ± 2 ly (45.2 ± 0.7 pc) |
| Absolute magnitude (MV) | 1.49 |
| Details | |
| Mass | 1.49 M☉ |
| Luminosity | 19.24 L☉ |
| Surface gravity (log g) | 3.95±0.14 cgs |
| Temperature | 7,344±250 K |
| Rotational velocity (v sin i) | 148±10 km/s |
| Age | 614 Myr |
| Other designations | |
| CD−44° 9236, HD 125442, HIP 70104, HR 5364, SAO 224843 | |
| Database references | |
| SIMBAD | data |
HD 125442 is a single star in the southern constellation of Lupus. Its apparent visual magnitude is 4.78, which can be seen with the naked eye. The distance to HD 125442, as determined from its annual parallax shift of 22.1 mas, is 147 light years.
This is an F-type subgiant star with a stellar classification of F0 IV, having, at the age of 614 million years, used up the hydrogen at its core and begun the process of evolving into a giant star. It has 1.49 times the mass of the Sun and is radiating 19 times the Sun's luminosity from its photosphere at an effective temperature of 7,344 K. The star displays a high rate of spin with a projected rotational velocity of 148 km/s.