HD 95338 and Its Jupiter-Like Planet

HD 95338 is a K0.5 V star, a class that marks it as cooler and redder than the Sun, and a main-sequence dwarf. It lies 121 light-years away and hosts one known planet. The star's spectral class places it among the K-type dwarfs, which are cooler than the Sun's G-type class.

The host star is 5.08 billion years old, with a mass of 0.83 solar masses and a radius of 0.87 solar radii. Its temperature is 5210 K, cooler than the Sun's. Its reported mass and radius estimates are both smaller than the Sun's.

The single planet, HD 95338 b, is a Jupiter-like world, a size class that describes a radius exceeding 4 times Earth's. Its radius is 4.27 Earth radii, larger than Earth's. It orbits every 55.1 days, a period revealed by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. The planet was discovered in 2020.