HD 125442
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  | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lupus[1] |
| Right ascension | 14h 20m 42.58071s[2] |
| Declination | −45° 11′ 13.4190″[2] |
| Apparent magnitude (V) | 4.78[1] |
| Characteristics | |
| Spectral type | F0 IV[3] |
| B−V color index | 0.310±0.003[1] |
| 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[2] |
| Distance | 147 ± 2 ly (45.2 ± 0.7 pc) |
| Absolute magnitude (MV) | 1.49[6] |
| Details | |
| Mass | 1.58[7] M☉ |
| Radius | 2.95[7] R☉ |
| Luminosity | 20.2[7] L☉ |
| Surface gravity (log g) | 3.97[7] cgs |
| Temperature | 7,123[7] K |
| Rotational velocity (v sin i) | 148±10[6] km/s |
| Age | 614[8] Myr |
| Other designations | |
| CD−44°9236, HD 125442, HIP 70104, HR 5364, SAO 224843[9] | |
| Database references | |
| SIMBAD | data |
HD 125442 is a single[10] star in the southern constellation of Lupus. Its apparent visual magnitude is 4.78,[1] which can be seen with the naked eye. The distance to HD 125442, as determined from its annual parallax shift of 22.1 mas,[2] 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 million years,[8] used up the hydrogen at its core and begun the process of evolving into a giant star. It has 1.6 times the mass of the Sun and is radiating 20 times the Sun's luminosity from its photosphere at an effective temperature of 7,123 K.[7] The star displays a high rate of spin with a projected rotational velocity of 148 km/s.[6]
