Kepler-327: A Cool, Old Star With Three Small Worlds

Kepler-327 is a star located 789 light-years away, and it hosts three planets. The star is estimated to be 3.02 billion years old, with a mass of 0.57 solar masses and a radius of 0.55 solar radii. Its temperature is 3920 K, cooler than the Sun's.

All three planets were discovered by transit in 2014. Kepler-327 b is classified as Earth-like and orbits every 2.55 days with a radius of 1.11 Earth radii. Kepler-327 c is also Earth-like, with an orbital period of 5.21 days and a radius of 1.03 Earth radii. Kepler-327 d is a Super-Earth with an orbital period of 14 days and a radius of 1.73 Earth radii.

Among the listed planets, Kepler-327 b has the shortest year by reported estimates, while Kepler-327 d has the longest. Kepler-327 c has the second-shortest year. Kepler-327 c also has the smallest radius among the listed planets, and Kepler-327 d has the largest. Kepler-327 b has the second-smallest radius of the three.

The star's reported mass and radius estimates are both smaller than the Sun's, and its reported temperature is cooler than the Sun's. Kepler-327 b and Kepler-327 d both have reported radius estimates larger than Earth's.