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dwarf planet

Pluto

39.4820 AU from the Sun
2,377 km
Diameter
1.303 × 10²²
Mass
90,560 days
Orbit
153.3 hrs
Day Length
5
Moons
-230°C
Avg Temp
Once our ninth planet, now the king of the Kuiper Belt. Pluto has a heart-shaped glacier (Sputnik Planitia) and a system of five moons.
Did you know? Pluto was demoted to dwarf planet in 2006, but it's still larger than the asteroid belt's biggest object. Its "heart" is made of nitrogen ice!
Atmosphere
Thin N₂, CH₄, CO atmosphere
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