HD 114783
HD 114783 is a star with two exoplanetary companions in the equatorial constellation of Virgo. With an apparent visual magnitude of 7.56 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.
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Virgo |
Right ascension | 13h 12m 43.78556s |
Declination | –02° 15′ 54.1307″ |
Apparent magnitude (V) | 7.56 |
Characteristics | |
Spectral type | K1V |
B−V color index | 0.930±0.013 |
Variable type | Constant |
Astrometry | |
Radial velocity (Rv) | −12.07±0.12 km/s |
Proper motion (μ) | RA: −138.362(34) mas/yr Dec.: 10.284(22) mas/yr |
Parallax (π) | 47.5529 ± 0.0291 mas |
Distance | 68.59 ± 0.04 ly (21.03 ± 0.01 pc) |
Absolute magnitude (MV) | 6.00 |
Details | |
Mass | 0.883+0.018 −0.028 M☉ |
Radius | 0.810+0.011 −0.009 R☉ |
Luminosity | 0.423±0.001 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 | |
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. It is roughly 2.5 billion years old and is chromospherically inactive with a low projected rotational velocity of 1.9 km/s. The star has 88% of the mass and 81% of the radius of the Sun. It is radiating 42% of the luminosity of the Sun from its photosphere at an effective temperature of 5,114 K.
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. A second companion, HD 114783 c, was discovered in 2016, and in 2023 its inclination and true mass were measured via astrometry.
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥ 1.034±0.089 MJ | 1.169±0.068 | 496.9±2.3 | 0.085±0.033 | — | — |
c | 1.9+0.5 −0.4 MJ |
5.0±0.1 | 4,352+88 −76 |
0.05+0.04 −0.03 |
21+7 −4 or 159+4 −6° |
— |