Epsilon Tauri b
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Discovery
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| Discovered by | Sato et al. |
| Discovery date | Feb 7, 2007 |
| Detection method | Doppler Spectroscopy |
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Designations
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| Alternative names | 74 Tauri b HD 28305 b HIP 20889 b HR 1409 b SAO 93954 b |
| Periastron | 1.64 AU |
| Apastron | 2.22 AU |
| Semi-major axis | 1.93 ± 0.03 AU |
| Eccentricity | 0.151 ± 0.023 |
| Orbital period | 645.5 ± 5.3 d |
| Average orbital speed | 32.46 km/s |
| Inclination | ? |
| Angular distance | 42.889 mas |
| Longitude of periastron | 94.4 ± 7.4° |
| Time of periastron | 2,452,879 ± 12 JD |
| Semi-amplitude | 98.5 ± 1.8 m/s |
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Physical characteristics
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| Mass | > 7.6 ± 0.2 MJ |
Epsilon Tauri b is a massive extrasolar planet that orbits the star Epsilon Tauri. 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 cluster that is 2.7 times the mass of our Sun, making it the most massive planet-harboring star. This provides evidence that it was an A-type star when it was a main-sequence.
The inclination of the orbit is not known. This object would probably be a brown dwarf instead.
[edit] References
- Sato et al. (2007). "Lonely Planet Guide to Hyades".
- Sato et al. (2007). "Hyades Planet Challenges Formation Theories".
[edit] See also
[edit] External links
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