Planets of Kepler-158

Kepler-158 is a K-type star located 1030 light-years away. It is older than the Sun at 3.98 billion years, with a mass of 0.75 solar masses and a radius of 0.71 solar radii. Its temperature is 4720 K. Three planets are known to orbit this star, all discovered by the transit method, which detects the small dip in brightness when a planet crosses in front of its star.

Kepler-158 b is a Super-Earth with a radius of 2.12 Earth radii, larger than Earth's. It completes an orbit in 16.7 days, the second-shortest period among the listed planets. Kepler-158 c is also a Super-Earth, with a radius of 1.9 Earth radii, and has the longest year among the listed planets at 28.6 days.

Kepler-158 d is a Sub-Earth, meaning its radius is smaller than Earth's. Its radius is 0.43 Earth radii, the smallest among the listed planets. It orbits in just 0.645 days, the shortest period of the three. Kepler-158 d was discovered in 2024, while Kepler-158 b and c were both discovered in 2014.