Eta2 Hydri b
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| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 1.93 AU |
| Eccentricity | (e) | 0.40±0.07 |
| Orbital period | (P) | 711±8 d |
| Angular distance | (θ) | 29.023 mas |
| Longitude of periastron |
(ω) | 351.5±9.5° |
| Time of periastron | (T0) | 2,451,420 JD |
| Semi-amplitude | (K) | 105±8 m/s |
| Physical characteristics | ||
| Mass | (m) | >6.54 MJ |
| Discovery information | ||
| Discovery date | May 25, 2005 | |
| Discoverer(s) | Setiawan et al. | |
| Detection method | Radial velocity | |
| Discovery site | La Silla, Chile | |
| Discovery status | Published | |
Eta2 Hydri b (also known as HD 11977 b) is an extrasolar planet orbiting Eta2 Hydri. The presence of the planet around an intermediate-mass giant star provides indirect evidence for the existence of planetary systems around A-type stars.
[edit] References
- Setiawan, J., Rodmann, J., da Silva, L., Hatzes, A., Pasquini, L., von der Lühe, O., de Medeiros, J., Döllinger, M., Girardi, L. (2005). "A substellar companion around the intermediate-mass giant star HD 11977". Astronomy & Astrophysics 437: L31 – L34. doi:.
[edit] External links
- Extrasolar Planets Encyclopaedia: Notes for planet HD 11977 b
- Extrasolar Visions: HD 11977 b
- HD 11977 b, a planet around a giant star
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