Planet
Neptune
Neptune has the fastest winds in the Solar System: over 2,000 km/h.
Surface gravity 1.14× Earth
Mean radius 24,622 km
Mass 17.1× Earth
Length of day 16.1 hours
Length of year 164.8 Earth years
Avg. temperature -200 °C
Moons 16
Distance from Sun 30.1 AU
Neptune compared to Earth
Neptune has about 3.86× the radius of Earth and 17.1× its mass. Its surface gravity is 1.14 times Earth's — so a 70 kg person would weigh about 79.6 kg there.
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