| Discovery | |
|---|---|
| Discovered by | Sato et al.[1] |
| Discovery site | Okayama Planet Search Program, Japan |
| Discovery date | 19 February 2008 |
| Radial velocity | |
| Orbital characteristics | |
| 0.68 AU (102,000,000 km) | |
| Eccentricity | 0 |
| 136.75 ± 0.25 d 0.37439 y | |
| 2,453,001.7 ± 1.4 | |
| Star | Xi Aquilae |
Xi Aquilae b (abbreviated ξ Aquilae b, ξ Aql b), formally named Fortitudo /fɔːrtɪˈtjuːdoʊ/, is an extrasolar planet approximately 184 light-years from the Sun in the constellation of Aquila. The planet was discovered orbiting the yellow giant star Xi Aquilae in 2008. The planet has a minimum mass of 2.8 Jupiter and a period of 137 days.[1]