TOI-1470: A Nearby Red Dwarf with Two Super-Earths

TOI-1470 is an M1.5 V star, a small, cool red dwarf, located 169 light-years from Earth. The star has a reported mass of 0.471 solar masses, a radius of 0.469 solar radii, and a temperature of 3710 K, all smaller or cooler than the corresponding values for the Sun. Its age is 1.3 billion years. Two planets have been found orbiting this star.

Both planets were discovered by transit in 2023. TOI-1470 b is a Super-Earth with a radius of 2.18 Earth radii and a mass of 7.32 Earth masses. Its orbital period is 2.53 days, the shortest among the listed planets. Among the listed planets, it also has the smallest radius and the largest reported mass. Its mean density is 3.89 g/cm³, 0.707 times Earth's.

TOI-1470 c is also a Super-Earth, with a radius of 2.47 Earth radii and a mass of 7.24 Earth masses. Its orbital period is 18.1 days, the longest among the listed planets. Among the listed planets, it has the largest radius and the smallest reported mass. Its mean density is 2.65 g/cm³, 0.48 times Earth's.

Both planets are larger and more massive than Earth. Their orbital periods demonstrate repeated transits, with TOI-1470 c completing one orbit in 18.1 days compared to 2.53 days for TOI-1470 b.