About this world
TOI-261.02 is a sub-Neptune orbiting TOI-261, a yellow, Sun-like star 373 light-years from Earth. It is about 3.3 times the size of Earth. It completes an orbit every 13 days at 0.086 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 1,008 K (734 °C): far too hot for liquid water on its surface. At its size it almost certainly keeps a deep envelope of hydrogen and helium.
It was discovered in 2021 by transit with Transiting Exoplanet Survey Satellite (TESS). A planet crosses its star and dims it by a tiny, periodic fraction. TOI-261 has 2 known planets; the others are TOI-261.01.