HD 222582 b is an extrasolar planet that is 8.37 times the mass of Jupiter orbiting the star HD 222582. The orbital period is 572 days and orbits at a semimajor axis of 1.35 AU in one of the most eccentric orbits of any known planets.[2]
Discovery[1][2] | |
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Discovered by | California and Carnegie Planet Search |
Discovery site | W. M. Keck Observatory |
Discovery date | November 1, 1999 |
Detection method | Doppler spectroscopy |
Orbital characteristics | |
Semi-major axis | 1.35 AU (202,000,000 km) |
Eccentricity | 0.76 |
Orbital period (sidereal) | 572 d |
Time of periastron | 2,450,174.8 |
Argument of periastron | 293 |
Semi-amplitude | 276.6 |
Star | HD 222582 |
Physical characteristics | |
Mean radius | 1.12 [3] RJ Estimate |
Mass | 8.37 [4] MJ |
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