HD 114783
Star in the constellation Virgo
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HD 114783 is a star with two exoplanetary companions in the equatorial constellation of Virgo. With an apparent visual magnitude of 7.56[1] it is too faint to be visible with the unaided eye, but is an easy target for binoculars. Based on parallax measurements, it is located at a distance of 68.6 light-years (21.0 parsecs) from the Sun, but is drifting closer with a radial velocity of −12 km/s.[2]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Virgo[1] |
| Right ascension | 13h 12m 43.78556s[2] |
| Declination | −02° 15′ 54.1307″[2] |
| Apparent magnitude (V) | 7.56[1] |
| Characteristics | |
| Spectral type | K1V[3] |
| B−V color index | 0.930±0.013[1] |
| Variable type | Constant[4] |
| Astrometry | |
| Radial velocity (Rv) | −12.07±0.12[2] km/s |
| Proper motion (μ) | RA: −138.362(34) mas/yr[2] Dec.: 10.284(22) mas/yr[2] |
| Parallax (π) | 47.5529±0.0291 mas[2] |
| Distance | 68.59 ± 0.04 ly (21.03 ± 0.01 pc) |
| Absolute magnitude (MV) | 6.00[1] |
| Details[5] | |
| Mass | 0.883+0.018 −0.028 M☉ |
| Radius | 0.810+0.011 −0.009 R☉ |
| Luminosity | 0.423±0.001[6] L☉ |
| Surface gravity (log g) | 4.42±0.58 cgs |
| Temperature | 5,114±12 K |
| Metallicity [Fe/H] | 0.08±0.11 dex |
| Rotational velocity (v sin i) | 1.9±0.5 km/s |
| Age | 2.5+3.0 −1.6 Gyr |
| Other designations | |
| BD−01°2784, GJ 3769, HD 114783, HIP 64457, SAO 139218 | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
This is an orange-hued K-type main-sequence star with a stellar classification of K1V.[3] It is roughly 2.5[5] billion years old and is chromospherically inactive[4] with a low projected rotational velocity of 1.9 km/s.[5] The star has 88% of the mass and 81% of the radius of the Sun.[5] It is radiating 42%[6] of the luminosity of the Sun from its photosphere at an effective temperature of 5,114 K.[5]
In 2001, the California and Carnegie Planet Search team found an exoplanet, HD 114783 b, orbiting the star using the radial velocity method. The discovery was made with the Keck Telescope.[4] A second companion, HD 114783 c, was discovered in 2016,[7] and in 2023 its inclination and true mass were measured by the first time, via astrometry.[8] The masses and orbits were revised in 2025.[9]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥ 1.043±0.038 MJ | 1.180+0.019 −0.021 |
1.34858(82) | 0.121+0.013 −0.014 |
— | — |
| c | 1.47+0.58 −0.63 MJ |
5.03±0.12 | 11.89+0.30 −0.27 |
0.074+0.047 −0.045 |
21+7 −4[8] or 152+8 −27° |
— |