| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lupus |
| Right ascension | 14h20m 42.58071s[1] |
| Declination | −45° 11′ 13.4190″[1] |
| Apparent magnitude (V) | 4.78[2] |
| Characteristics | |
| Spectral type | F0 IV[3] |
| B−V color index | 0.310±0.003[2] |
| Astrometry | |
| Radial velocity (Rv) | +0.0±3.7[4] km/s |
| Proper motion (μ) | RA: +37.33[5] mas/yr Dec.: −72.81[5] mas/yr |
| Parallax (π) | 22.1448 ± 0.3265 mas[1] |
| Distance | 147 ± 2 ly (45.2 ± 0.7 pc) |
| Absolute magnitude (MV) | 1.49[6] |
| Details | |
| Mass | 1.49[7] M☉ |
| Luminosity | 19.24[2] L☉ |
| Surface gravity (log g) | 3.95±0.14[7] cgs |
| Temperature | 7,344±250[7] K |
| Rotational velocity (v sin i) | 148±10[6] km/s |
| Age | 614[7] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 125442 is a single[9] star in the southern constellationofLupus. Its apparent visual magnitude is 4.78,[2] which can be seen with the naked eye. The distance to HD 125442, as determined from its annual parallax shiftof22.1 mas,[1] is 147 light years.
This is an F-type subgiant star with a stellar classification of F0 IV,[3] having, at the age of 614[7] million years, used up the hydrogen at its core and begun the process of evolving into a giant star. It has 1.49[7] times the mass of the Sun and is radiating 19[2] times the Sun's luminosity from its photosphere at an effective temperature of 7,344 K.[7] The star displays a high rate of spin with a projected rotational velocity of 148 km/s.[6]
