Kepler-145: A Distant Star With Two Giant Planets

Kepler-145 is a star located 1850 light-years away. It hosts two planets, both discovered by the transit method in 2013. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness. The star itself is estimated to be 3.24 billion years old, with a mass of 1.37 solar masses, a radius of 1.89 solar radii, and a temperature of 6200 K. Its reported mass and radius are larger than the Sun's, and its reported temperature is hotter than the Sun's.

The two planets orbit Kepler-145 in 23 days and 42.9 days. Kepler-145 b is classified as Neptune-like, meaning its radius reaches up to four times Earth's. Its radius is 2.65 Earth radii, its mass is 37.1 Earth masses, and its mean density is 11 g/cm³, which is 1.99 times Earth's. Its orbital period is 23 days, the shortest among the listed planets. Both its radius and mass are larger than Earth's.

Kepler-145 c is classified as Jupiter-like, meaning its radius exceeds four times Earth's. Its radius is 4.32 Earth radii, its mass is 79.4 Earth masses, and its mean density is 5.43 g/cm³, or 0.985 times Earth's. Its orbital period is 42.9 days, the longest among the listed planets. Its radius and mass are both larger than Earth's. Among the listed planets, Kepler-145 c has the largest radius and the largest reported mass, while Kepler-145 b has the smallest radius and the smallest reported mass.