About Kepler-1040 b
Kepler-1040 b is an uncommon exoplanet. It lies about 1,572.5 light-years from Earth, shines at apparent magnitude 13.61, has an equilibrium temperature near 300 K and spans roughly 2.08 Earth radii.
Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.