CoRoT-2b (formerly known as CoRoT-Exo-2b[4]) is the second extrasolar planet to be detected by the French-led CoRoT mission, and orbits the star CoRoT-2 at a distance of 700 light years from Earth towards the constellation Aquila.

Its huge size is due to the intense heating from its parent star, which causes the outer layers of its atmosphere to bloat.

The extremely large radius of the planet indicates that CoRoT-2b is very hot, estimated to be around 1500 K, even hotter than would be expected given its location close to its parent star.

This fact may be a sign of tidal heating due to interactions with another planet.

As of 2008, the CoRoT-2b spin-orbit angle (that is, the angle between the equator of the star and the plane of the planet orbit) was calculated by Bouchy et al. by means of the Rossiter–McLaughlin effect[10] with a value of +7.2 ± 4.5 °.