HD 2638 b is a planet of the star HD 2638. It is a typical "hot Jupiter", a planet that orbits its parent star in a very tight "torch orbit". The distance to the star is less than 1/20 Earth's distance from the Sun. One orbital revolution lasts only about three and half days.[1]
Discovery | |
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Discovered by | Moutou, Mayor, Bouchy et al. |
Discovery site | Geneva |
Discovery date | 2005 |
Detection method | Radial velocity |
Orbital characteristics | |
Semi-major axis | 0.044 AU (6,600,000 km) |
Eccentricity | 0 |
Orbital period (sidereal) | 3.4442 ± 0.0002 d |
Time of periastron | 2,453,323.206 ± 0.002 |
Argument of periastron | 0 |
Semi-amplitude | 67.4 ± 0.4 |
Star | HD 2638 |
Physical characteristics | |
Mass | >0.48 MJ |