TOI-1839: A Nearby Star with Two Super-Earths

TOI-1839 is a star located 379 light-years away. It has 0.934 solar masses, a radius of 0.848 solar radii, and a temperature of 5380 K. Its reported radius is smaller than the Sun's, and its reported temperature is cooler than the Sun's. Two planets are known to orbit this star, both discovered by transit in 2026.

TOI-1839 b and TOI-1839 c are both classified as Super-Earths, a size class that reaches 2.5 times Earth's radius. TOI-1839 b has a radius of 2.22 Earth radii and an orbital period of 1.42 days. TOI-1839 c has a radius of 2.41 Earth radii and an orbital period of 4.02 days. Each planet's reported radius is larger than Earth's. A transit occurs when a planet passes in front of its star from our viewpoint, causing a small dip in observed brightness, and repeated dips help establish orbital periods.

Among the listed planets, TOI-1839 b has the shortest year, at 1.42 days, and the smallest radius, at 2.22 Earth radii. TOI-1839 c has the longest year, at 4.02 days, and the largest radius, at 2.41 Earth radii.