HD 96700 and Its Three Planets

HD 96700 is a star 82.9 light-years away with a spectral type of G1/2V. Its mass is 0.99 solar masses, its radius is 1.16 solar radii, and its temperature is 5870 K. It is 8.12 billion years old. Its reported mass estimate is smaller than the Sun's, its reported radius estimate is larger than the Sun's, and its reported temperature is hotter than the Sun's. Three planets are known to orbit this host.

HD 96700 b and HD 96700 c were both discovered in 2021 by the radial velocity method, which measures the wobble a planet's gravity induces in its star's motion; repeated wobbles reveal the planet and its orbital period. HD 96700 b has a minimum mass of 8.9 Earth masses and an orbital period of 8.12 days. HD 96700 c has a minimum mass of 3.5 Earth masses and an orbital period of 19.9 days. Each has a minimum mass larger than Earth's. Among the listed planets, HD 96700 b has the shortest year by reported estimates, at 8.12 days, and the second-smallest minimum mass, at 8.9 Earth masses; HD 96700 c has the second-shortest year, at 19.9 days, and the smallest minimum mass, at 3.5 Earth masses.

HD 96700 d was also discovered in 2021 by the radial velocity method. It has a minimum mass of 12.7 Earth masses, which is larger than Earth's, and an orbital period of 104 days. Among the listed planets, it has the largest minimum mass, at 12.7 Earth masses, and the longest year by reported estimates, at 104 days.