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| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Virgo |
| Right ascension | 14h 20m 53.517665s[1] |
| Declination | −17° 28′ 53.489700″[1] |
| Apparent magnitude (V) | 8.31[2] / ? |
| Characteristics | |
| Spectral type | G3V[2] + M3- 4V[3] |
| Apparent magnitude (B) | 8.938[4] |
| Apparent magnitude (J) | 7.179±0.023[4] |
| Apparent magnitude (H) | 6.950±0.059[4] |
| Apparent magnitude (K) | 6.838±0.026[4] |
| B−V color index | 0.628±0.018[4] |
| Astrometry | |
| Radial velocity (Rv) | −18.25±0.15[1] km/s |
| Proper motion (μ) | RA: −60.260±0.034 mas/yr[1] Dec.: −67.314±0.027 mas/yr[1] |
| Parallax (π) | 17.2897 ± 0.0279 mas[1] |
| Distance | 188.6 ± 0.3 ly (57.84 ± 0.09 pc) |
| Absolute magnitude (MV) | 4.65[4] |
| Position (relative to HD 125612 A)[3] | |
| Component | HD 125612 B |
| Angular distance | 89.994±0.066″ |
| Position angle | 162.682±0.052° |
| Projected separation | ~4,750 AU |
| Details | |
| Mass | 1.091±0.027 M☉[2] 1.133±0.025[5] M☉ |
| Radius | 1.05±0.08[2] R☉ |
| Luminosity | 1.09[2] L☉ |
| Surface gravity (log g) | 4.41±0.05[2] cgs |
| Temperature | 5,900±18[2] K |
| Metallicity [Fe/H] | 0.23±0.014[2] dex |
| Rotational velocity (v sin i) | 3.2[6] km/s |
| Age | 1.351±1.127[5] Gyr |
| HD 125612 B | |
| Mass | 0.184±0.012[3] M☉ |
| Age | 1-5[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 125612 is a binary star system with three exoplanetary companions[2][8] in the equatorial constellation of Virgo. It is too dim to be visible to the naked eye, having an apparent visual magnitude of 8.31.[2] The system is located at a distance of 188 light years from the Sun based on parallax measurements, but it is drifting closer with a radial velocity of −18 km/s.[1]
The yellow-hued primary component, designated HD 125612 A, is an ordinary G-type main-sequence star with a stellar classification of G3V,[2] which indicates it is generating energy through hydrogen fusion at its core. It is about 1.4[5] billion years old and is rich in heavy elements, having a 70% greater abundance of iron compared to the Sun. The star has 109% of the mass and 105% of the girth of the Sun. It is radiating 109% of the luminosity of the Sun from its photosphere at an effective temperature of 5,900 K.[2]
A red dwarf companion star, HD 125612 B, was detected in 2009 at a projected separation of 4750 AU. The possibility of a much closer companion to the primary star was also suggested, though this will need more observation to better define.[3]
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