Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 13h 10m 39.824s [1] |
Declination | −35° 03′ 17.21″ [1] |
Apparent magnitude (V) | 8.73 [2] |
Characteristics | |
Spectral type | K3 V [2] |
B−V color index | 0.982 [2] |
Astrometry | |
Radial velocity (Rv) | 33.350±0.0004 [3] km/s |
Proper motion (μ) |
RA: −137.143
mas/
yr
[1] Dec.: −324.874 mas/ yr [1] |
Parallax (π) | 35.7355 ± 0.0200 mas [1] |
Distance | 91.27 ± 0.05
ly (27.98 ± 0.02 pc) |
Absolute magnitude (MV) | 6.49 [2] |
Details | |
Mass | 0.76±0.01 [4] M☉ |
Radius | 0.73±0.01 [4] R☉ |
Luminosity | 0.28±0.01 [4] L☉ |
Surface gravity (log g) | 4.58±0.02 [4] cgs |
Temperature | 4,926±13 [4] K |
Metallicity [Fe/H] | −0.012 [5] dex |
Rotational velocity (v sin i) | 3.06 [5] km/s |
Age | 8.8±2.8 [4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 114386 is a star with a pair of orbiting exoplanets in the southern constellation of Centaurus. It has an apparent visual magnitude of 8.73, [2] which means it cannot be viewed with the naked eye but can be seen with a telescope or good binoculars. Based on parallax measurements, the system is located at a distance of 91 light years from the Sun. It is receding with a radial velocity of 33.4 km/s. [3] The star shows a high proper motion, traversing the celestial sphere at an angular rate of 0.318 arcsec yr−1. [7]
The spectrum of HD 114386 yields a stellar classification of K3 V, [2] matching a K-type main-sequence star, or orange dwarf. It has 76% of the mass of the Sun and 73% of the Sun's radius. HD 114386 is a much older star than the Sun with an estimated age of roughly nine billion years. [4] The abundance of iron in the stellar atmosphere, a measure of the star's metallicity, is nearly solar. [5] It is rather dim compared to the Sun, radiating just 28% of the luminosity of the Sun from its photosphere at an effective temperature of 4,926 K. [4]
In 2004, the Geneva Extrasolar Planet Search Team announced the discovery of an extrasolar planet orbiting the star. [2] The preliminary data for a second exoplanet was released in 2011. [8]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥0.37 MJ | 1.65 [9] | 445 | 0.12 | — | — |
c | ≥1.19 MJ | – | 1,046 | 0.06 | — | — |