TRAPPIST-1d, also designated as 2MASS J23062928-0502285 d, is a small exoplanet, which orbits on the inner edge of the habitable zone of the ultracool dwarf star TRAPPIST-1 approximately 40 light-years away from Earth in the constellation of Aquarius.

Radius: 3,104 mi

Gravity: 4.737 m/s²

Discovered: May 2, 2016

Orbital period: 97 hours

Orbits: TRAPPIST-1