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= 51 Eridani b = 51 Eridani b is a planet that orbits 51 Eridani, in the constellation Eridanus (constellation).

General Information
51 Eridani b was announced August 2015, but was discovered in December 2014 using the Gemini Planet Imager, an international project led by the Kavli Institute for Particle Astrophysics and Cosmology. It's location is approximately 100 light years away, and approximately 20 million years old.

Scientists estimate the mass to be twice that of Jupiter, and has the strongest methane signature of any Exoplanet. The surface temperature is 427°C, which is substantially cooler than the 537°C surface area of Jupiter, the next planet of closest in size and composition.