Gliese 876 d

Gliese 876 d is an extrasolar planet orbiting the red dwarf star Gliese 876. At the time of its discovery in 2005, the planet had the lowest mass of any known extrasolar planet apart from the pulsar planets orbiting PSR B1257+12. Gliese 876 d takes less than two days to complete an orbit, at a distance only one-fiftieth of that between the Earth and the Sun and is the innermost known planet in its planetary system. Due to its low mass it can be categorized as a Super-Earth.