HD 43691

HD 43691 is a G-type star with magnitude +8.03 located approximately 280 light-years away in the constellation Auriga. This yellow star is about to stop thermonuclear hydrogen-fusion in its core and eventually expand to become a red giant.

HD 43691
Observation data
Epoch J2000      Equinox J2000
Constellation Auriga
Right ascension 06h 19m 34.6758s[1]
Declination +41° 05′ 32.3053″[1]
Apparent magnitude (V) 8.03
Characteristics
Spectral type G0IV
B−V color index 0.596[2]
Astrometry
Radial velocity (Rv)-29.2 ± 0.2 km/s
Proper motion (μ) RA: 22.727±0.089[1] mas/yr
Dec.: −53.358±0.082[1] mas/yr
Parallax (π)11.6535 ± 0.0497 mas[1]
Distance280 ± 1 ly
(85.8 ± 0.4 pc)
Absolute magnitude (MV)8.57
Details
Mass1.21 ± 0.04[3] M☉
Radius1.44 ± 0.03[3] R☉
Luminosity2.24 ± 0.02[3] L☉
Surface gravity (log g)4.19 ± 0.02[3] cgs
Temperature5920 ± 34[3] K
Age3.1 ± 2.5[3] Gyr
Other designations
BD+41° 1415, HIP 30057, SAO 41025, GSC 02930-02105, 2MASS J06193467+4105321, TYC 2930-2105-1, PPM 48960
Database references
SIMBADdata

Planetary system

In July 2007, the star is found to have a giant planet in orbit around it.[4] It has minimum mass two and a half times that of Jupiter and orbits the star closer than Mercury to the Sun.

The HD 43691 planetary system[5][6]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥2.57+0.31
−0.34 MJ		 0.238+0.014
−0.016		 36.99913+0.00095
−0.00092		 0.085+0.012
−0.011		 — —

See also

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. "HIC 30057". SIMBAD. Retrieved 2008-10-17.
  3. Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951. S2CID 54555839.
  4. da Silva, Ronaldo; Udry, Stéphane; Bouchy, François; Moutou, Claire; Mayor, Michel; Beuzit, Jean-Luc; Bonfils, Xavier; Delfosse, Xavier; Desort, Morgan; Forveille, Thierry; Galland, Franck; Hébrard, Guillaume; Lagrange, Anne-Marie; Loeillet, Benoit; Lovis, Christophe; Pepe, Francesco; Perrier, Christian; Pont, Frédéric; Queloz, Didier; Santos, Nuno C.; Ségransan, Damien; Sivan, Jean-Pierre; Vidal-Madjar, Alfred; Zucker, Shay (October 2007). "ELODIE metallicity-biased search for transiting Hot Jupiters IV. Intermediate period planets orbiting the stars HD 43691 and HD 132406". Astronomy and Astrophysics. 473 (1): 323–328. arXiv:0707.0958. Bibcode:2007A&A...473..323D. doi:10.1051/0004-6361:20077314. S2CID 18805775.
  5. Ment, Kristo; et al. (2018). "Radial Velocities from the N2K Project: Six New Cold Gas Giant Planets Orbiting HD 55696, HD 98736, HD 148164, HD 203473, and HD 211810". The Astronomical Journal. 156 (5). 213. arXiv:1809.01228. Bibcode:2018AJ....156..213M. doi:10.3847/1538-3881/aae1f5. S2CID 119243619.
  6. Hill, Michelle L.; Mocnik, Teo; Kane, Stephen R.; Henry, Gregory W.; Pepper, Joshua; Hinkel, Natalie R.; Dalba, Paul A.; Fulton, Benjamin J.; Stassun, Keivan G.; Rosenthal, Lee J.; Howard, Andrew W.; Howell, Steve B.; Everett, Mark E.; Boyajian, Tabetha S.; Fischer, Debra A.; Rodriguez, Joseph E.; Beatty, Thomas G.; James, David J. (2020). "Orbital Refinement and Stellar Properties for the HD 9446, HD 43691, and HD 179079 Planetary Systems". The Astronomical Journal. 159 (5): 197. arXiv:2003.02385. Bibcode:2020AJ....159..197H. doi:10.3847/1538-3881/ab7d33. S2CID 212414679.


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.