Kepler-265 and Its Four Planets

Kepler-265 is a star located 4180 light-years away, with four planets in its orbit. The host star is 5.25 billion years old and has a mass of 0.98 solar masses, a radius of 1.03 solar radii, and a temperature of 5880 K. Its reported temperature is hotter than the Sun's.

All four planets were discovered by the transit method in 2014, which detects the small dip in a star's brightness when a planet passes in front of it. The planets span a range of sizes and orbital periods. Kepler-265 b is classified as a Super-Earth with a radius of 1.86 Earth radii and an orbital period of 6.85 days. Kepler-265 c is a Neptune-like planet with a radius of 2.63 Earth radii and an orbital period of 17 days. Kepler-265 d, a Super-Earth, has a radius of 2.49 Earth radii and an orbital period of 43.1 days. Kepler-265 e is Neptune-like with a radius of 2.59 Earth radii and an orbital period of 67.8 days.

The planets' sizes can be grouped by classification: Kepler-265 b and Kepler-265 d are Super-Earths, while Kepler-265 c and Kepler-265 e are Neptune-like. Every one of the four planets has a reported radius estimate larger than Earth's.

Among the listed planets, Kepler-265 b has both the shortest year at 6.85 days and the smallest radius at 1.86 Earth radii. Kepler-265 c has the second-shortest year at 17 days and the largest radius at 2.63 Earth radii. Kepler-265 d has the second-longest year at 43.1 days and the second-smallest radius at 2.49 Earth radii. Kepler-265 e has the longest year at 67.8 days and the second-largest radius at 2.59 Earth radii.