Kepler-18
Sign in to savethumb | right | Comparative sizes of Earth, Kepler-18 b and [[Jupiter]] Kepler-18 is a star with almost the same mass as the Sun in the Cygnus constellation.
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- Planetary system
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thumb | right | Comparative sizes of Earth, Kepler-18 b and [[Jupiter]] Kepler-18 is a star with almost the same mass as the Sun in the Cygnus constellation.
==Planetary system== The star is orbited by 3 confirmed planets, announced in 2011. In 2021, it was found the orbital plane of Kepler-18d is slowly changing, likely under the gravitational influence of the additional giant planet.