Artist's conception of Gliese 667 Cb
Gliese 667 Cb is an extrasolar planet orbiting around a star Gliese 667C which is a member of a Gliese 667 triple star system. It is the most massive planet discovered in the system and is likely a super-Earth or a mini-Neptune. Orbital stability analysis indicates that it cannot be more than twice of its minimum mass. It orbits too close to the star to be in habitable zone.