| Discovery | |
|---|---|
| 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 |
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.
References
- Moutou, C.; et al. (2015). "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 (1): 367–373. arXiv:1411.7048. Bibcode:2005A&A...439..367M. doi:10.1051/0004-6361:20052826.
External links
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