Planèt

Neptune

The farthest planet, an ice giant with the fastest winds measured in the solar system.

NASA/JPL

A planet found with a pencil before it was seen through a telescope, and home to the fastest winds known on any planet.

Neptune, a deep blue globe with a dark storm. — Neptune and its Great Dark Spot, photographed by Voyager 2 in 1989. Credit: NASA/JPL

Neptune is similar in size and composition to Uranus but slightly denser and more massive. Winds in its atmosphere reach about 2,000 km/h.

It was the first planet found by mathematical prediction: irregularities in Uranus’s motion led Urbain Le Verrier to calculate its position, and Johann Galle found it in 1846. Its largest moon, Triton, orbits backwards and is probably a captured Kuiper belt object.

Lune

Triton

Eksplore li nan orrery

Fon

Facts kle
Diamèt	49,244 km	[1]
Mass	1.024 × 10²⁶ kg	[1]
Densite	1.638 g/cm³	[1]
Gravite	11.3 m/s²	Derivasyon nan set done a
Vitès escape	23.6 km/s	Derivasyon nan set done a
Rotasyon (sidereal)	16.1 hr	[1]
Tan jou a	16.1 hr	[2]
Orbita	165 yrs	[3]
Aksyal	28.3°	[2]
Tanperati mwayèn	-200°C	[2]
Lune	16	[2]
Distans mwayèn soti nan solèy la (semi- gwo aks)	30.07 au	[3]

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