TOI-6330 b: A Jupiter-Like World Around a Cool Star

TOI-6330 is a star 453 light-years away with one known planet. The star is smaller than the Sun in both mass and radius, at 0.531 solar masses and 0.49 solar radii, and its temperature of 3540 K is cooler than the Sun's. It is also older than the Sun, with an age of 7.6 billion years.

The planet TOI-6330 b was discovered in 2025 by the transit method, in which a planet passing in front of its star from our viewpoint causes a small dip in observed brightness. It orbits every 6.85 days. With a radius of 10.9 Earth radii, it is larger than Earth and falls into the Jupiter-like class, which covers planets exceeding 4 times Earth's radius. Its mass of 3180 Earth masses is also larger than Earth's and roughly 10 times Jupiter's mass. Its mean density is 13.6 g/cm³, 2.46 times Earth's.