Kepler-717 and Its Super-Earth

Kepler-717 is a star 9150 light-years away with one known planet. The host star is 4.37 billion years old and has a mass of 0.88 solar masses, a radius of 0.85 solar radii, and a temperature of 5490 K. Its reported mass and radius estimates are smaller than the Sun's, and its reported temperature is cooler than the Sun's. The system's only listed planet is Kepler-717 b, a Super-Earth discovered by transit in 2016. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. Kepler-717 b orbits every 4.41 days and has a radius of 2.42 Earth radii. That radius estimate is larger than Earth's. Planet size classes compare radius with Earth's: a Sub-Earth is smaller than Earth, an Earth-like planet stays within 1.5 times Earth's radius, a Super-Earth reaches 2.5 times, a Neptune-like planet reaches 4 times, and a Jupiter-like planet exceeds 4 times Earth's radius.