Kepler-46 and Its Three Planets

Kepler-46 is a K-type star located 2530 light-years away, with three planets known to orbit it. The star is estimated to be 9.7 billion years old, with a mass of 0.902 solar masses, a radius of 0.938 solar radii, and a temperature of 5160 K. Its mass and radius are both smaller than the Sun's, and it is cooler than the Sun.

Kepler-46 b is a Jupiter-like planet discovered by transit in 2012. It has a reported upper limit of 1907 Earth masses, an orbital period of 33.6 days, and a radius of 9.06 Earth radii, larger than Earth's. Kepler-46 c was discovered in 2012 by transit timing variations, with a mass of 119 Earth masses, larger than Earth's, and an orbital period of 57 days. Kepler-46 d, a Super-Earth discovered by transit in 2014, has an orbital period of 6.77 days and a radius of 1.64 Earth radii.

Among the listed planets, Kepler-46 d has the shortest year, at 6.77 days. Kepler-46 b has the second-shortest year, at 33.6 days, and Kepler-46 c has the longest year, at 57 days.