About Kepler-1126 b
Kepler-1126 b is a rare exoplanet. It lies about 2,073.5 light-years from Earth, shines at apparent magnitude 14.22, has an equilibrium temperature near 374 K and spans roughly 1.73 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.