Kepler-411: A K-Type Dwarf and Its Four Worlds

Kepler-411 is a K2 V star, a main-sequence dwarf, located 501 light-years away. The star's reported mass estimate is 0.81 solar masses, its radius estimates at 0.75 solar radii, and its temperature is 4910 K, all smaller or cooler than the corresponding solar values. Its age is 2.69 billion years. Four planets are known to orbit this host.

Kepler-411 b is a Super-Earth discovered by transit in 2013. Its orbital period is 3.01 days, its radius is 2.4 Earth radii, and its mass of 25.6 Earth masses is larger than Earth's. Kepler-411 b's mean density is 10.2 g/cm³, 1.85 times Earth's.

Kepler-411 c, a Jupiter-like planet found by transit in 2016, orbits every 7.83 days. Its radius is 4.42 Earth radii, and its mass of 26.4 Earth masses is larger than Earth's. Kepler-411 c's mean density is 1.68 g/cm³, 0.306 times Earth's.

Kepler-411 d is Neptune-like and was discovered by transit in 2018, with an orbital period of 58 days. Its radius is 3.32 Earth radii, and its mass of 15.2 Earth masses is larger than Earth's. Kepler-411 d's mean density is 2.29 g/cm³, 0.416 times Earth's.

Kepler-411 e completes the set, discovered in 2018 by Transit Timing Variations. Its orbital period is 31.5 days, and its mass of 10.8 Earth masses is larger than Earth's.