 Artist's conception of planet orbiting ψ1 Aquarii | |
| Discovery | |
|---|---|
| Discovered by | Mitchell et al. |
| Discovery site |  United States |
| Discovery date | 16 November 2013 |
| Radial velocity | |
| Orbital characteristics | |
| 0.7 AU (100,000,000 km) | |
| Eccentricity | 0.027 ± 0.026 |
| 181.4 ± 0.1d | |
| April 11, 2005 2453472.1 ± 24 | |
| 177.3 ± 0.8 | |
| Semi-amplitude | 91.0 ± 2.3 |
| Star | 91 Aquarii |
91 Aquarii b, also known asHD 219449 b, is anextrasolar planet orbiting in the91 Aquarii system approximately 148light-years away in theconstellation ofAquarius. It orbits at the average distance of 105Gm from its star, which is slightly closer than Venus is to the sun (108 Gm). The planet takes half an Earth year to orbit around the star in a very circular orbit with eccentricity less than 0.053.
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