Planet
Neptune
Ice giant
The windy blue outpost
The most distant planet, Neptune has the fastest winds measured in the solar system — over 2,000 km/h. It was found in 1846 from mathematical predictions based on irregularities in Uranus's orbit.
In your sky
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Key facts
Distance
30.1 AU from the Sun (mean)
Diameter
49,244 km
Orbital period
164.8 years
Day length
16 h 6 min
Moons
16 confirmed
Did you know
- It completed its first orbit since discovery in 2011.
- Its largest moon Triton orbits backwards.
- Neptune requires binoculars or a telescope to see.
