HD 117207 b is an extrasolar planet orbiting at 3.79 astronomical units taking about 2597 days to complete its orbit around HD 117207. Its orbit is moderate in eccentricity. This planet was announced in January 2005 by Marcy in Keck Observatory. The planet has at least 1.88 Jupiter masses.[1][2]
Discovery | |
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Discovered by | Marcy et al. |
Discovery site | Keck Observatory |
Discovery date | 25 January 2005 |
Detection method | radial velocity |
Orbital characteristics | |
Apastron | 4.34 AU (649,000,000 km) |
Periastron | 3.24 AU (485,000,000 km) |
Semi-major axis | 3.79 AU (567,000,000 km) |
Eccentricity | 0.144±0.035 |
Orbital period (sidereal) | 2597±41 d 7.110 y |
Average orbital speed | 15.9 |
Time of periastron | 2450666.43±148.89 |
Argument of periastron | 81.7±19.9 |
Semi-amplitude | 26.6±0.93 |
Star | HD 117207 |
Constellation of Centaurus | |||||
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