Kepler-354 and Its Three Worlds

Kepler-354 is a star located 1810 light-years away. It hosts three planets. The star is estimated to be 5.25 billion years old, with a mass of 0.73 solar masses and a radius of 0.7 solar radii. Its reported temperature is 4630 K, which is cooler than the Sun's. The star's reported mass and radius estimates are both smaller than the Sun's.

Kepler-354 b is a Super-Earth discovered by transit in 2014. It has an orbital period of 5.48 days and a radius of 1.84 Earth radii, larger than Earth's. Among the listed planets, Kepler-354 b has the shortest year and the largest radius by reported estimates.

Kepler-354 c is an Earth-like planet, also discovered by transit in 2014. It completes an orbit in 16.9 days and has a radius of 1.31 Earth radii. Among the listed planets, it has the second-shortest year and the second-smallest radius by reported estimates.

Kepler-354 d is likewise an Earth-like planet, discovered by transit in 2014. Its orbital period is 24.2 days and its radius is 1.24 Earth radii. Among the listed planets, Kepler-354 d has the longest year and the smallest radius by reported estimates.