HD 72659
A Sun-like star with a planet and a brown dwarf.
HD 72659 is a yellow-hued, Sun-like main sequence star in the equatorial constellation of Hydra. It is too faint to be seen with the naked eye, having an apparent visual magnitude of 7.46. The star is notable for hosting a superjovian planet and a brown dwarf companion.
Quick Facts
- Apparent visual magnitude
- 7.46
- Distance
- 169.4 light years
- Absolute magnitude
- 3.98
- Radial velocity
- −18.2 km/s
- Stellar classification
- G2V
- Age
- about seven billion years
- Projected rotational velocity
- 5.1 km/s
- Mass
- 7% greater than the Sun
Facts from the source article.
Planetary system
An extrasolar planet, HD 72659 b, was discovered in 2003 via the Doppler method. It is a superjovian planet with an eccentric orbit, completing a lap every 3630 days. In 2022, astrometry measured its inclination and true mass, and detected a second substellar companion, likely a brown dwarf. The brown dwarf's orbit lies in the brown dwarf desert. The host star's age prevents direct imaging of either companion. The moderate eccentricity of planet b may result from Kozai-Lidov oscillations.
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