Kepler-25 and Its Three Planets

Kepler-25 is a star 793 light-years away with a spectral type of F8 and three planets. It is 2.75 billion years old, has 1.26 solar masses, 1.34 solar radii, and a temperature of 6350 K. Its mass, radius, and temperature are all larger or hotter than the Sun's.

Kepler-25 b is a Neptune-like planet discovered by transit in 2011. It has 8.7 Earth masses, a radius of 2.75 Earth radii, and an orbital period of 6.24 days, the shortest among the listed planets. Its mean density is 2.31 g/cm³, 0.419 times Earth's. Kepler-25 c is Jupiter-like, discovered by transit in 2011, with 15.2 Earth masses, a radius of 5.22 Earth radii, and an orbital period of 12.7 days, the second-shortest among the listed planets. Its mean density is 0.59 g/cm³, 0.107 times Earth's. Both planets are larger in radius and mass than Earth.

Kepler-25 d was discovered by radial velocity in 2014. It has 71.9 Earth masses and an orbital period of 122 days, the longest among the listed planets, and the largest reported mass. Its mass is larger than Earth's.