K2-154 is an orange K-type dwarf (about 0.65 solar masses, 4,097 K, 0.63 solar radii), 129 light-years from Earth. K2-154 b is a planet with 2.0 Earth radii, with an orbital period of 3.7 days, at 0.041 AU from its star, and an equilibrium temperature near 715 K, discovered in 2018 via transit. K2-154 c is a planet with 2.1 Earth radii, with an orbital period of 8.0 days, at 0.068 AU from its star, and an equilibrium temperature near 552 K, discovered in 2018 via transit.