HD 2638 b
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| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 0.044 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 3.4442 ± 0.0002 d |
| Angular distance | (θ) | 0.819 mas |
| Longitude of periastron |
(ω) | 0° |
| Time of periastron | (T0) | 2,453,323.206 ± 0.002 JD |
| Semi-amplitude | (K) | 67.4±0.4 m/s |
| Physical characteristics | ||
| Mass | (m) | >0.48 MJ |
| Discovery information | ||
| Discovery date | 2005 | |
| Discoverer(s) | Moutou, Mayor, Bouchy et al. |
|
| Detection method | Radial velocity | |
| Discovery site | Geneva | |
| Discovery status | Published | |
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". Distance to the star is less than 1/20th Earth's distance from the Sun. One orbital revolution lasts only about three and half days.
[edit] References
- Moutou et al. (2005). "The HARPS search for southern extra-solar planets IV. Three close-in planets around HD 2638, HD 27894 and HD 63454". Astronomy and Astrophysics 439: 367 – 373. doi:.
