HD 114386 and Its Two Known Planets

HD 114386 is a K-type main-sequence star 91.1 light-years away. Its spectral type, K3V, places it among the cooler, orange-dwarf class of stars. The star has a reported age of 1.4 billion years, a mass of 0.78 solar masses, a radius of 0.74 solar radii, and a temperature of 4820 K. Its mass and radius are smaller than the Sun's, and its temperature is cooler. Two planets are known to orbit this star.

Both planets were found by the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. HD 114386 b was discovered in 2003. Its minimum mass is 362 Earth masses, and it completes one orbit in 938 days. That minimum mass is larger than Earth's and roughly 1.14 times Jupiter's mass. HD 114386 c was discovered in 2026. Its minimum mass is 118 Earth masses, and its orbital period is 444 days; its minimum mass is also larger than Earth's.

A minimum mass is a lower bound on a planet's true mass, so both figures should be read as lower limits rather than exact values. Among the listed planets, HD 114386 c has the shortest year by reported estimates, at 444 days, and the smallest minimum mass, at 118 Earth masses. HD 114386 b has the longest year by reported estimates, at 938 days, and the largest minimum mass, at 362 Earth masses.