TRAPPIST-1b, also designated as 2MASS J23062928-0502285 b, is an mainly rocky, Venus-like exoplanet orbiting around the ultra-cold dwarf star TRAPPIST-1, located approximately 39 light-years away from Earth in the constellation Aquarius.

Discovered: May 2, 2016

Density: 3.98 g/cm³

Orbits: TRAPPIST-1