55 Cancri d is a gas giant exoplanet that orbits a G-type star, like the Sun. It has a mass 3.88 x that of Jupiter, takes 4,825 days to complete one orbit of its star, and is 5.503 AU from its star. Its discovery was announced in December 2002. In 2015, the public voted to give it the name "Lippershey," which was approved by the International Astronomical Union, after the German-Dutch lens grinder and spectacle maker credited with invention of the refracting telescope. The other planets in the system are also named for famous astronomers and telescope inventors of the Renaissance.

PLANET TYPE
Gas Giant
DISCOVERY DATE
2002
MASS
3.878 Jupiters
PLANET RADIUS
Unknown
ORBITAL RADIUS
5.503 AU
ORBITAL PERIOD
13.2 years
ECCENTRICITY
0.019
DETECTION METHOD
Radial Velocity