Kepler-9b
Astronomical discovery
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Kepler-9b is one of the first planets discovered outside the solar system by NASA's Kepler Mission. It revolves around the star Kepler-9 within the constellation Lyra. Wikipedia
Orbital period: 19 days
Orbits: Kepler-9
Discovered: August 26, 2010
Discovered by: Kepler Mission team
Mass: 43.5+2.7; −3.3 ME
Orbital period (sidereal): 19.24 d