HD 154345 b
From Wikipedia, the free encyclopedia
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
 (Artist's impression) |
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| Orbital elements | ||
| Semimajor axis | (a) | 4.18 AU |
| Eccentricity | (e) | 0.036 ± 0.046 |
| Orbital period | (P) | 3322 ± 93 d |
| Angular distance | (θ) | 231.5 mas |
| Longitude of periastron |
(ω) | 113° |
| Time of periastron | (T0) | 2,453,230 ± 330 JD |
| Semi-amplitude | (K) | 14.28 ± 0.75 m/s |
| Physical characteristics | ||
| Mass | (m) | >0.963 MJ |
| Discovery information | ||
| Discovery date | March 12, 2006 (published: May 27, 2007) |
|
| Discoverer(s) | Wright et al. | |
| Detection method | radial velocity | |
| Discovery site | United States | |
| Discovery status | published | |
| Other designations | ||
|
GJ 651 b, HIP 83389 b, SAO 46452 b
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HD 154345 b, is a Jupiter-sized extrasolar planet orbiting the star HD 154345.
Contents |
[edit] Discovery
Wright et al. discovered the planet in March 2006 using the radial velocity method to detect small wobbling movement in the star caused by the gravity of the planet. The discovery was published in May 2007.
[edit] Characteristics
The planet is a gas giant with a mass at least slightly less than that of Jupiter and is likely to be a near twin of Jupiter, estimated to be around the same size, or slightly larger and likely to harbor a system of many moons and perhaps rings. It orbits its parent star at the distance of 4.18 AU. Its orbital period is about 9.1 Earth years and its orbit is circular.
The planet does not come close enough to the habitable zone to disrupt the orbits of potential Earth-like planets in the system.[citation needed]
[edit] References
- J. T. Wright, G. W. Marcy, D. A Fischer, R. P. Butler, S. S. Vogt, C. G. Tinney, H. R. A. Jones, B. D. Carter, J. A. Johnson, C. McCarthy, and K. Apps (2007). "Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars" ([dead link] – Scholar search). The American Astronomical Society 657: 533–545.
