About this world
K2-136 b is an Earth-sized planet orbiting K2-136, an orange dwarf (type K5.5) 193 light-years from Earth. It is about 1 times the size of Earth and holds 4.3 Earth masses. It completes an orbit every 7.98 days at 0.071 AU from its star, closer than Mercury is to the Sun.
Its equilibrium temperature is about 610 K (337 °C): far too hot for liquid water on its surface. By the "cosmic shoreline", it has likely held on to an atmosphere.
It was discovered in 2017 by transit with K2. A planet crosses its star and dims it by a tiny, periodic fraction. K2-136 has 3 known planets; the others are K2-136 c and K2-136 d.