TOI-6448 b: A Young Star's Close-Orbiting Giant

TOI-6448 is a star located 1,260 light-years away, and it has one known planet. The host star is remarkably young, with an age of 0.034 billion years, placing it in the very young class since stellar ages under 0.1 billion years fall into that category. Its mass is 1.03 solar masses and its radius is 0.897 solar radii, which is smaller than the Sun's radius. The star's temperature of 5,910 K is hotter than the Sun's.

The single planet orbiting this star is TOI-6448 b, discovered in 2025 by the transit method, in which a planet passes in front of its star and causes a small dip in observed brightness. Repeated dips help establish the planet's orbital period. TOI-6448 b completes one orbit every 14.8 days and has a radius of 8.47 Earth radii. That radius is larger than Earth's, and with a radius exceeding four times Earth's, the planet is classified as Jupiter-like.