Kepler-190 and Its Two Worlds

Kepler-190 is a star located 1410 light-years away. It is 3.72 billion years old and has a mass of 0.86 solar masses, a radius of 0.8 solar radii, and a temperature of 5170 K. Its reported mass, radius, and temperature estimates are each smaller or cooler than the Sun's. Two planets orbit this host.

Both planets were discovered by transit in 2014, the same method that reveals them when they pass in front of their star and cause a small dip in observed brightness. Kepler-190 b is a Super-Earth with an orbital period of 2.02 days and a radius of 1.56 Earth radii, larger than Earth's. Kepler-190 c is Earth-like, with an orbital period of 3.76 days and a radius of 1.46 Earth radii, also larger than Earth's. Among the listed planets, Kepler-190 b has the shortest year and the largest radius by reported estimates, while Kepler-190 c has the longest year and the smallest radius.

A year is simply the time a planet takes to complete one orbit, which for both of these worlds is measured in just a few days.