HD 43691

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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

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.

Planetary system[edit]

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]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥2.55±0.34 MJ 0.238±0.015 36.9987±0.0011 0.0796±0.0067

See also[edit]

References[edit]

  1. ^ a b c d e 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. ^ a b c d e f 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.

External links[edit]

Coordinates: Sky map 06h 19m 34.6771s, +41° 05′ 32.302″