HD 217107 c
HD 217107 c is an extrasolar planet approximately 64 light-years away from Earth in the constellation of Pisces (the Fish). The planet was the second planet to be discovered orbiting the star HD 217107. HD 217107 c's existence was hypothesized in 1998 due to the eccentricity of the inner planet's orbit and confirmed in 2005 when radial velocity studies of the star indicated another, more distant and massive companion orbiting the star. The planet has an eccentric orbit lasting on order of a decade.
| Discovery | |
|---|---|
| Discovered by | Vogt et al. |
| Discovery site | United States |
| Discovery date | June 24, 2005 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| 6.074±0.080 AU | |
| Eccentricity | 0.3848±0.0086 |
| 5189±21 d | |
| 2450770±16 | |
| 206.3±1.7 | |
| Semi-amplitude | 53.41±0.75 |
| Star | HD 217107 |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.