HD 75302 and Its Lone Known Planet

HD 75302 is a star 98.9 light-years from us, classified as the spectral type G5 V. That label marks a Sun-like main-sequence dwarf, a star whose leading letter and number place it in a temperature class and whose trailing V says it is still burning hydrogen in its core. Its measured mass is 1.01 solar masses, its radius is 0.941 solar radii, and its surface temperature is 5700 K. The star's reported radius estimate is smaller than the Sun's.

One planet is known to orbit this star. HD 75302 b was found in 2023 by the radial velocity method, which detects the planet through the wobble its gravity induces in the star's motion; repeated wobbles reveal both the planet and its orbital period. That period is 4360 days. The planet's mass is 1720 Earth masses, so its reported mass estimate is larger than Earth's, and it is roughly 5.4 times Jupiter's mass.