About BD+20 274 b
BD+20 274 b is a common exoplanet. It lies about 4,313.4 light-years from Earth, shines at apparent magnitude 9.37, has spectral type K5 III and has an equilibrium temperature near 756 K.
Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.