| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 2638 | |
| Constellation | Cetus | |
| Right ascension | (α) | 00h 29m 59.873s[1] |
| Declination | (δ) | –05° 45′ 50.40″[1] |
| Distance | 160 ± 10[1] ly (50 ± 4[1] pc) | |
| Spectral type | G5V | |
| Orbital elements | ||
| Semimajor axis | (a) | 0.044 AU |
| Eccentricity | (e) | 0 |
| Orbital period | (P) | 3.4442 ± 0.0002 d |
| Argument 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. | |
| Discovery 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.[2]
References[]
- ↑ 1.0 1.1 1.2 1.3 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664. Vizier catalog entry
- ↑ (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 (1): 367–373.
External links[]
Coordinates: Sky map 00h 29m 59.87s, −05° 45′ 50.41″
| File:Iota-draconis-b.jpg | This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |
