Epsilon Tauri b
Artistic simulation of Epsilon Tauri b orbiting its host star. | |
| Discovery | |
|---|---|
| Discovered by | Sato et al. |
| Discovery date | 7 February 2007 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| 1.878±0.001 AU | |
| Eccentricity | 0.076+0.009 −0.008 |
| 585.82+0.26 −0.33 d | |
| 2453492.3+11.3 −10.0 JD | |
| 107.90°+6.82° −6.07° | |
| Semi-amplitude | 93.24+0.74 −0.73 m/s |
| Star | Epsilon Tauri |
| Physical characteristics | |
| Mass | ≥7.190±0.056 MJ |
Epsilon Tauri b (abbreviated ε Tauri b or ε Tau b), formally named Amateru /æməˈtɛruː/, is a super-Jupiter exoplanet orbiting the K-type giant star Epsilon Tauri approximately 146 light-years (45 parsecs) away from the Earth in the constellation of Taurus. It orbits the star further out than Earth orbits the Sun. It has moderate eccentricity.
The planet orbits one of the four giant stars in the Hyades star cluster, and was the first planet ever discovered in an open cluster.