K2-72 is a cool M-dwarf (about 0.27 solar masses, 3,360 K, 0.33 solar radii), 66.4 light-years from Earth. K2-72 b is a planet with 1.1 Earth radii, with an orbital period of 5.6 days, at 0.040 AU from its star, on an eccentric orbit (e ≈ 0.11), discovered in 2016 via transit. K2-72 d is a planet with 1.0 Earth radii, with an orbital period of 7.8 days, at 0.050 AU from its star, on an eccentric orbit (e ≈ 0.11), discovered in 2016 via transit.