About Kepler-51 e
Kepler-51 e is an uncommon exoplanet. It lies about 2,556.5 light-years from Earth, shines at apparent magnitude 14.88, spans roughly 2.18 Earth radii and weighs about 5.4 Earth masses.
Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.