HD 125612
From Infogalactic: the planetary knowledge core
Observation data Epoch J2000.0 Equinox J2000.0 |
|
---|---|
Constellation | Virgo |
Right ascension | 14h 20m 53.517s[1] |
Declination | –17° 28′ 53.49″[1] |
Apparent magnitude (V) | 8.31[2] / ? |
Characteristics | |
Spectral type | G3V[2] / M3- 4V[3] |
Apparent magnitude (B) | 8.92 |
Apparent magnitude (J) | 7.179 |
Apparent magnitude (H) | 6.950 |
Apparent magnitude (K) | 6.838 |
B−V color index | 0.59 |
Variable type | none |
Astrometry | |
Radial velocity (Rv) | −18.4 km/s |
Proper motion (μ) | RA: -61.12 ± 1.25[1] mas/yr Dec.: -67.65 ± 0.79[1] mas/yr |
Parallax (π) | 18.45 ± 1.09 mas |
Distance | 180 ± 10 ly (54 ± 3 pc) |
Absolute magnitude (MV) | 4.72 |
Position (relative to HD 125612 A)[3] | |
Component | HD 125612 B |
Angular distance | 89.994 ± 0.066″ |
Position angle | 162.682 ± 0.052° |
Observed separation (projected) |
~4750 AU |
Details | |
Mass | 1.091 ± 0.027[2] M☉ |
Radius | 1.05 ± 0.08[2] R☉ |
Luminosity | 1.09[2] L☉ |
Surface gravity (log g) | 4.41 ± 0.05[2] cgs |
Temperature | 5900 ± 18[2] K |
Metallicity | [Fe/H] = 0.23 ± 0.014[2] |
Age | <3[2] 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 |
Extrasolar Planets Encyclopaedia |
data |
HD 125612 is a yellow main sequence star located approximately 180 light years away in the constellation Virgo. It is rich in heavy elements and has three known planets in orbit around it.[2][4] A red dwarf companion star 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]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
c | ≥18.4 M⊕ | 0.05 | 4.1547 ± 0.0005 | 0.27 ± 0.12 | — | — |
b | ≥3.0 MJ | 1.37 | 559.4 ± 1.3 | 0.46 ± 0.01 | — | — |
d | ≥7.2 MJ | 4.2 | 3008 ± 202 | 0.28 ± 0.12 | — | — |
See also
References
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Coordinates: 14h 20m 53.5147s, −17° 28′ 53.475″
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