HD 43691
Coordinates: 
06h 19m 34.6771s, +41° 05′ 32.302″
06h 19m 34.6771s, +41° 05′ 32.302″| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 19m 34.676s[1] |
| Declination | +41° 05′ 32.30″[1] |
| Apparent magnitude (V) | 8.03[2] |
| Characteristics | |
| Spectral type | G0 IV[3] |
| B−V color index | 0.596±0.015[2] |
| Variable type | None[4] |
| Absolute magnitude (MV) | 3.52[2] |
| Details | |
Gyr | |
| Database references | |
| SIMBAD | data |
HD 43691 is a
light years based on parallax measurements, but is drifting closer with a heliocentric radial velocity of −29 km/s.[2]
This is a slightly
chromospheric activity is minimal, allowing for accurate measurement of radial velocity variation.[3]
Planetary system
In July 2007, the star is found to have a super-jovian exoplanet in orbit around it.[3] It has minimum mass two and a half times that of Jupiter and orbits the star closer than Mercury to the Sun.
| 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
- List of extrasolar planets
References
- ^ S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ S2CID 119257644.
- ^ S2CID 18805775.
- ^ S2CID 212414679.
- ^ S2CID 54555839.
- ^ "HD 43691". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2023-12-16.
- S2CID 119243619.
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