HD 231701

HD 231701
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Sagitta
Right ascension 19h 32m 04.1609s[1]
Declination +16° 28′ 27.443″[1]
Apparent magnitude (V) 9.093[2]
Characteristics
Spectral type F8 V[2]
B−V color index 0.539[2]
Astrometry
Radial velocity (Rv)−63.48±0.22[2] km/s
Proper motion (μ) RA: +63.470±0.054[1] mas/yr
Dec.: 15.475±0.055[1] mas/yr
Parallax (π)9.09 ± 0.29[1] mas
Distance360 ± 10 ly
(110 ± 4 pc)
Absolute magnitude (MV)3.64[2]
Details[3]
Mass1.15±0.08 M☉
Radius2.6±0.1[4] R☉
Luminosity3.06[2] L☉
Surface gravity (log g)4.37±0.03 cgs
Temperature6,224±27 K
Metallicity [Fe/H]0.04±0.02 dex
Rotational velocity (v sin i)4.26[5] km/s
Age1.35[5] Gyr
Other designations
BD+16° 3883, HD 231701, HIP 96078, SAO 104946[6]
Database references
SIMBADdata

HD 231701 is a yellow-white dwarf star approximately 360 light years away in the constellation of Sagitta. It is a 9th magnitude star, meaning the star is not visible to the naked eye, but powerful binoculars or a small telescope is needed to view the star. It is an F-type main-sequence star, a type of hydrogen-fusing star that is hotter, more massive, and brighter than our Sun.

Planetary system

In 2007, the N2K Consortium used the radial velocity technique to discover a Jupiter-like planet orbiting at 0.55 AU around the star.[7]

The HD 231701 planetary system[7]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b >1.08 MJ 0.55 142 ± 2.8 0.19 ± 0.05 — —

See also

References

  1. 1 2 3 4 5 Gaia Collaboration; et al. (November 2016), "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties", Astronomy & Astrophysics, 595: 23, arXiv:1609.04172, Bibcode:2016A&A...595A...2G, doi:10.1051/0004-6361/201629512, A2.
  2. 1 2 3 4 5 6 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015.
  3. ↑ Santos, N. C.; et al. (2013). "SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs". Astronomy and Astrophysics. 556. A150. arXiv:1307.0354. Bibcode:2013A&A...556A.150S. doi:10.1051/0004-6361/201321286.
  4. ↑ Bonfanti, A.; et al. (2015), "Revising the ages of planet-hosting stars", Astronomy & Astrophysics, 575 (A18): 17, arXiv:1411.4302, Bibcode:2015A&A...575A..18B, doi:10.1051/0004-6361/201424951.
  5. 1 2 Delgado Mena, E.; et al. (April 2015), "Li abundances in F stars: planets, rotation, and Galactic evolution", Astronomy & Astrophysics, 576: 24, arXiv:1412.4618, Bibcode:2015A&A...576A..69D, doi:10.1051/0004-6361/201425433, A69.
  6. ↑ "HD 231701 -- Star". SIMBAD Astronomical Database. Centre de données astronomiques de Strasbourg. Retrieved 2014-10-16.
  7. 1 2 Fischer, Debra A.; et al. (2007). "Five Intermediate-Period Planets from the N2K Sample". The Astrophysical Journal. 669 (2): 1336–1344. arXiv:0704.1191. Bibcode:2007ApJ...669.1336F. doi:10.1086/521869.
  • "HD 231701". The Extrasolar Planets Encyclopedia.

Coordinates: 19h 32m 04.1611s, +16° 28′ 27.444″


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