HD 175167 b is an extra-solar planet orbiting HD 175167, which is a G type star within the Pavo constellation around 219 light years away from the Earth. The planet was discovered by the Magellan Planet Search Program as the astronomical object fit the Keplerian orbital model. During the observations 13 doppler velocity tests were conducted, which showed this object's mass was at least 7.8 Jovian-masses and its orbit has a high eccentricity. The exoplanet takes 3.53 years to complete a full stellar orbit.[2][3][4]
Discovery | |
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Discovered by | Arriagada et al. |
Discovery site | Las Campanas Observatory |
Discovery date | January 26, 2010 |
Detection method | Doppler spectroscopy |
Orbital characteristics | |
Apastron | 3.70 AU (554,000,000 km) |
Periastron | 1.10 AU (165,000,000 km) |
Semi-major axis | 2.40 ± 0.05 AU (359,000,000 ± 7,500,000 km) |
Eccentricity | 0.54 ± 0.09 |
Orbital period (sidereal) | 1290 ± 22 d 3.53 y |
Average orbital speed | 20.3 |
Inclination | 28°±19°[1] |
Time of periastron | 24553598 ± 48 |
Argument of periastron | 342 ± 9 |
Semi-amplitude | 161 ± 55 |
Star | HD 175167 |
Physical characteristics | |
Mass | 9.5±0.9 MJ[1] |
An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3.[1]
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