dwarf planet

Pluto

A dwarf planet in the Kuiper belt, visited by New Horizons in 2015.

See Pluto on the map

Across the equator

2,376 km

Average distance from the Sun

39.589 AU (about 5,922 million km)

One trip round the Sun

249.1 Earth years

One spin on its axis

6.4 Earth days, backwards. Pluto and its large moon Charon face each other as they turn.

Moons

5 known; the largest is Charon

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 · Neptune · Ceres

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