![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Planet_at_Psi1_Aquarii.png/640px-Planet_at_Psi1_Aquarii.png&w=640&q=50)
91 Aquarii b
Extrasolar planet / From Wikipedia, the free encyclopedia
91 Aquarii b, also known as HD 219449 b, is an extrasolar planet orbiting in the 91 Aquarii system approximately 148 light-years away in the constellation of Aquarius. It orbits at the average distance of 105 Gm 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.
Quick Facts Discovery, Discovered by ...
![]() Artist's conception of planet orbiting ψ1 Aquarii | |
Discovery | |
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Discovered by | Mitchell et al. |
Discovery site | ![]() |
Discovery date | 16 November 2013 |
Radial velocity | |
Orbital characteristics | |
0.7 AU (100,000,000 km) | |
Eccentricity | 0.027 ± 0.026 |
181.4 ± 0.1 d | |
April 11, 2005 2453472.1 ± 24 | |
177.3 ± 0.8 | |
Semi-amplitude | 91.0 ± 2.3 |
Star | 91 Aquarii |
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