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[1] mas
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
gollark: So I can force people to not use algorithms by vaguely describing them to them?
gollark: What if I describe it in very little detail?
gollark: That sure is the letter X (capital).
gollark: > an additional rule change:> submissions should be your own original work. it is discouraged (though allowed) to take code from external sources such as the internet, and it is no longer allowed to submit original code written by any other member of the server after the round started.What if I just describe my code to someone in detail and have them rewrite it?
gollark: I see.

See also

  • List of extrasolar planets

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.
  4. da Silva, R.; et al. (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.
  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.
  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". arXiv:2003.02385 [astro-ph.EP].


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