planet

Neptune

The farthest planet from the Sun, a deep-blue ice giant.

See Neptune on the map

Across the equator

49,528 km

Average distance from the Sun

30.07 AU (about 4,498 million km)

One trip round the Sun

164.9 Earth years

One spin on its axis

16 hours 6 minutes. Its winds are among the fastest measured on any planet.

Moons

over a dozen known; the largest is Triton

Equatorial diameters (the same values the map draws) and spin: NASA NSSDC planetary fact sheets (https://nssdc.gsfc.nasa.gov/planetary/factsheet/). Mean distance from the Sun: JPL Approximate Positions of the Planets, Table 1, and the JPL Small-Body Database for Ceres and Pluto. Year length is computed from the distance with Kepler's third law (years = distance in AU to the power 1.5).

Other worlds: Mercury · Venus · Mars · Jupiter · Saturn · Uranus · Ceres · Pluto

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