HD 82943 c is an extrasolar planet approximately 89 light-years away in the constellation of Hydra. The planet was announced in 2001 to be orbiting the yellow dwarf star HD 82943.[1] The planet is the innermost planet of two.[2]
Discovery | |
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Discovered by | Mayor, Udry et al. |
Discovery site | ![]() |
Discovery date | 2001 |
Detection method | Doppler spectroscopy |
Orbital characteristics | |
Semi-major axis | 0.746 AU (111,600,000 km) |
Eccentricity | 0.359 |
Orbital period (sidereal) | 219 d |
Time of periastron | 1189.3 |
Argument of periastron | 127 |
Semi-amplitude | 41.7 ± 0.91 |
Star | HD 82943 |