TOI-3862 b: A Jupiter-like World

TOI-3862 is a star located 812 light-years away. Its reported mass estimate is 0.9 solar masses and its reported radius estimate is 0.92 solar radii, both smaller than the Sun's. With a reported temperature of 5300 K, it is also cooler than the Sun. One planet orbits this star.

That planet is TOI-3862 b, a Jupiter-like world discovered by transit in 2026. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness; repeated dips help establish orbital periods. TOI-3862 b completes one orbit in 1.56 days. Its radius is 5.53 Earth radii, larger than Earth's and great enough to place it among the Jupiter-like class, which exceeds 4 times Earth's radius. Its mass is 53.7 Earth masses, also larger than Earth's. Its mean density is 1.75 g/cm³, 0.318 times Earth's.