Epsilon Reticuli b
From Infogalactic: the planetary knowledge core
| Exoplanet | List of exoplanets | |
|---|---|---|
| Orbital elements | ||
| Semi-major axis | (a) | 1.271 ± 0.073 AU |
| Eccentricity | (e) | 0.060 ± 0.043 |
| Orbital period | (P) | 428.1 ± 1.1 d |
| Argument of periastron |
(ω) | 216° |
| Time of periastron | (T0) | 2,451,963 ± 55 JD |
| Semi-amplitude | (K) | 32.2 ± 1.4 m/s |
| Physical characteristics | ||
| Mass | (m) | ≥1.56 ± 0.14 MJ |
| Discovery information | ||
| Discovery date | Dec 16, 2000 | |
| Discoverer(s) | Butler, Tinney, Marcy et al.[1] |
|
| Discovery method | Radial velocity | |
| Discovery site | Anglo-Australian Observatory |
|
| Discovery status | Published[1] | |
| Other designations | ||
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Epsilon Reticuli Ab
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Epsilon Reticuli b, sometimes designated Epsilon Reticuli Ab to distinguish from the white dwarf companion of the primary star Epsilon Reticuli, also known as HD 27442, was discovered on December 16, 2000 by the Anglo-Australian Planet Search Team using the highly successful radial velocity method. The planet's mass is at least 56% greater than Jupiter mass, a more accurate estimate requiring its inclination to be known.
The planet orbits its parent star relatively close, and with more than twice the eccentricity of Earth's orbit. Based on its mass, it is almost certainly a gas giant.[1][2]
