HD 114783

HD 114783
Observation data
Epoch J2000      Equinox J2000
Constellation Virgo
Right ascension 13h 12m 43.78556s[1]
Declination –02° 15′ 54.1307″[1]
Apparent magnitude (V) 7.56[2]
Characteristics
Spectral type K1V[3]
B−V color index 0.930±0.013[2]
Variable type Constant[4]
Astrometry
Radial velocity (Rv)−12.07±0.12[1] km/s
Proper motion (μ) RA: −138.362(34) mas/yr[1]
Dec.: 10.284(22) mas/yr[1]
Parallax (π)47.5529 ± 0.0291 mas[1]
Distance68.59 ± 0.04 ly
(21.03 ± 0.01 pc)
Absolute magnitude (MV)6.00[2]
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

HD 114783 is a star with two exoplanetary companions in the equatorial constellation of Virgo. With an apparent visual magnitude of 7.56[2] 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.[1]

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 via astrometry.[8]

The HD 114783 planetary system[9][8]
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° 		—
  1. ^ a b c d e f Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Houk1999 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Vogt2002 was invoked but never defined (see the help page).
  5. ^ a b c d e Cite error: The named reference Soto_Jenkins2018 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Bryan_et_al_2016 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Philipot2023 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Butler2006 was invoked but never defined (see the help page).