55 Cancri e, is an exoplanet in the orbit of its Sun-like host star 55 Cancri A. The mass of the exoplanet is about 8.63 Earth masses and its diameter is about twice that of the Earth, thus classifying it as the first super-Earth discovered around a main sequence star, predating Gliese 876 d by a year.

Distance to Earth: 40 light years

Radius: 7,422.7 mi

Discovered: August 30, 2004

Star: 55 Cancri A

Coordinates: RA 8h 52m 36s | Dec +28° 19′ 51″

Did you know: 55 Cancri e is one of five planets encircling a sun-like star called 55 Cancri, which lies about 40 light-years from Earth in the constellation of Cancer.