HD 36384 b: A Massive World Orbiting a Red Giant

HD 36384 is a single star located 683 light-years away, and its only known planet is HD 36384 b. The host is classified as an M0 III star, placing it among the cooler, redder stars. Its spectral type suggests it has evolved off the main sequence into the giant stage. The star has a mass of 1.14 solar masses, a radius of 38.4 solar radii, and a temperature of 3940 K. Its radius is larger than the Sun's, while its temperature is cooler than the Sun's. The star's age is 0.113 billion years.

HD 36384 b was discovered in 2023 using the radial velocity method. The radial velocity method detects the wobble a planet's gravity induces in its star's motion, with repeated wobbles revealing the planet and its orbital period. The planet's orbital period is 490 days. HD 36384 b has a minimum mass of 2100 Earth masses, meaning its true mass is at least that value. Its minimum mass is larger than Earth's and roughly 6.6 times Jupiter's mass.