About this world
TIC 38828280 b is a sub-Neptune orbiting TIC 38828280, an orange dwarf 934 light-years from Earth. It is about 2.6 times the size of Earth. It completes an orbit every 4.86 days at 0.053 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 910 K (636 °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 Transiting Exoplanet Survey Satellite (TESS). A planet crosses its star and dims it by a tiny, periodic fraction.