HD 114783

Star in the constellation Virgo From Wikipedia, the free encyclopedia

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]

Right ascension13h 12m 43.78556s[2]
Declination−02° 15 54.1307[2]
Quick facts Observation data Epoch J2000 Equinox J2000, Constellation ...
HD 114783
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]
Distance68.59 ± 0.04 ly
(21.03 ± 0.01 pc)
Absolute magnitude (MV)6.00[1]
Details[5]
Mass0.883+0.018
−0.028
 M
Radius0.810+0.011
−0.009
 R
Luminosity0.423±0.001[6] L
Surface gravity (log g)4.42±0.58 cgs
Temperature5,114±12 K
Metallicity [Fe/H]0.08±0.11 dex
Rotational velocity (v sin i)1.9±0.5 km/s
Age2.5+3.0
−1.6
 Gyr
Other designations
BD−01°2784, GJ 3769, HD 114783, HIP 64457, SAO 139218
Database references
SIMBADdata
Exoplanet Archivedata
ARICNSdata
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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]

More information Companion (in order from star), Mass ...
The HD 114783 planetary system[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
°
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See also

References

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