K2-187 is a Sun-like G-type star (about 0.97 solar masses, 5,438 K, 0.83 solar radii), 331 light-years from Earth. K2-187 b is a planet with 1.2 Earth radii, with an orbital period of 18.6 hours, discovered in 2018 via transit. K2-187 c is a planet with 1.4 Earth radii, with an orbital period of 2.9 days, discovered in 2018 via transit. K2-187 d is a planet with 2.4 Earth radii, with an orbital period of 7.1 days, discovered in 2018 via transit. K2-187 e is a planet with 1.9 Earth radii, with an orbital period of 13.6 days, discovered in 2018 via transit.