About this world
TOI-1806 c is a super-Earth orbiting TOI-1806, a cool red dwarf 181 light-years from Earth. It is about 1.3 times the size of Earth. It completes an orbit every 12 hours at 0.0091 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 961 K (688 °C): far too hot for liquid water on its surface. By the "cosmic shoreline", its star has probably stripped its atmosphere away, leaving bare rock.
It was discovered in 2026 by transit with Transiting Exoplanet Survey Satellite (TESS). A planet crosses its star and dims it by a tiny, periodic fraction. TOI-1806 has 3 known planets; the others are TOI-1806 d and TOI-1806.01.