Mass : 1.0243×10^26 kg
Orbital Period : 164.79 years
Discovered: 164.79 years ago (December 28, 1612) by Urbain Le Verrier bit of argument there though John Couch Adams claimed to have found it also!
Day: 15 hours, 57 minutes and 59 seconds (source)
Atmospheric components: 74% hydrogen, 25% helium, 1% methane
Number of moons: 13
Number of rings: 6
Looks like:
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