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Dwarf Planet

Pluto

The beloved dwarf planet

Pluto was reclassified as a dwarf planet in 2006 but remains one of the most fascinating objects in our solar system. Located in the Kuiper Belt, Pluto has a heart-shaped nitrogen ice glacier (Tombaugh Regio) that was revealed in stunning detail by NASA's New Horizons flyby in 2015. Pluto has five known moons, with Charon being so large relative to Pluto that the two are sometimes considered a binary system. The pair are tidally locked, always showing the same face to each other. Pluto's thin atmosphere expands and collapses as it moves closer to and farther from the Sun in its highly elliptical orbit.

Day Length

153.3h

6.4x Earth days

Year Length

90,560d

247.94x Earth years

Avg Temperature

-229°C

-240° to -218°C

Moons

5

No rings

No Solid Surface

Physical Properties

Radius

1,188.3 km

Mass

1.303 x 10^22

Surface Gravity

0.62 m/s²

Escape Velocity

1.21 km/s

Rotation Speed

47.18 km/h

Orbital Speed

4.67 km/s

Distance from Sun

5.9 billion

Composition

Ice and rock, nitrogen ice surface

Atmosphere Composition

Nitrogen90%
Methane8%
Carbon Monoxide2%

Could You Survive?

Instant death from cold and vacuum

There is no solid surface to stand on. No breathable oxygen. Extreme cold of -229°C would freeze you instantly.

Did You Know?

1

Pluto's heart-shaped feature (Tombaugh Regio) is larger than Texas

2

Pluto and Charon are tidally locked to each other

3

Pluto's orbit is so elliptical it sometimes comes closer to the Sun than Neptune

4

New Horizons took 9.5 years to reach Pluto, travelling at 58,000 km/h