HD 114729

HD 114729
Observation data
Epoch J2000      Equinox J2000
Constellation Centaurus
Right ascension 13h 12m 44.259s[1]
Declination –31° 52′ 24.06″[1]
Apparent magnitude (V) 6.68[2]
Characteristics
Spectral type G0 V[3]
B−V color index 0.591±0.008[2]
Astrometry
Radial velocity (Rv)26.3378±0.0187[4] km/s
Proper motion (μ) RA: −199.927 mas/yr[1]
Dec.: −308.130 mas/yr[1]
Parallax (π)26.3378 ± 0.0187 mas[5]
Distance123.84 ± 0.09 ly
(37.97 ± 0.03 pc)
Absolute magnitude (MV)3.89[2]
Details[6]
HD 114729 A
Mass0.97±0.01 M☉
Radius1.44±0.03 R☉
Luminosity2.33±0.02 L☉
Surface gravity (log g)4.10±0.02 cgs
Temperature5,939±58 K
Metallicity [Fe/H]−0.220[7] dex
Age9.30±0.60 Gyr
HD 114729 B
Mass0.253±0.011[8] M☉
Other designations
CD−31° 10156, HD 114729, HIP 64459, SAO 204237, WDS J13127-3152A[9]
Database references
SIMBADdata

HD 114729 is a Sun-like star with an orbiting exoplanet in the southern constellation of Centaurus. Based on parallax measurements, it is located at a distance of 124 light years from the Sun. It is near the lower limit of visibility to the naked eye, having an apparent visual magnitude of 6.68[2] The system is drifting further away with a heliocentric radial velocity of 26.3 km/s.[4] The system has a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.373″·yr−1.[10]

The spectrum of HD 114729 presents as an ordinary G-type main-sequence star, a yellow dwarf, with a stellar classification of G0 V.[3] It has a negligible level of magnetic activity, making it chromosperically quiet.[11] The star has about the same mass as the Sun, but the radius has expanded to 44% greater than the Sun's girth. It is radiating more than double the luminosity of the Sun from its photosphere at an effective temperature of 5,939 K. The size and luminosity suggest a much greater age than the Sun; perhaps around nine billion years.[6]

HD 114729 has a co-moving companion designated HD 114729 B, with the latter having 25.3% of the Sun's mass and a projected separation of 282±10 AU.[8]

  1. ^ a b c 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 Anderson2012 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Gray2006 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Soubiran_et_al_2018 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Bonfanti2016 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference open was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Mugrauer2005 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Luyten1995 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Butler2003 was invoked but never defined (see the help page).