About this world
TOI-4588 b is a sub-Neptune orbiting TOI-4588, a white A-type star 734 light-years from Earth. It is about 2.9 times the size of Earth. It completes an orbit every 13.1 days at 0.14 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 1,768 K (1,495 °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 2026 by transit with Kepler. A planet crosses its star and dims it by a tiny, periodic fraction.