PlanetsPluto
All Planets

Pluto

dwarf planet • Discovered 1930

Pluto was reclassified as a dwarf planet in 2006 by the IAU. NASA's New Horizons revealed it to be a geologically complex world with a heart-shaped nitrogen glacier called Tombaugh Regio.

Fun Fact

Pluto's heart-shaped glacier, Tombaugh Regio, is composed of nitrogen ice and is about the size of Texas.

Type

dwarf

Diameter

2,377 km

Temperature

-230°C

Moons

1

Rings

No

Gravity

0.62 m/s²

Discovery

Discovered by Clyde Tombaugh in 1930

Neptune

Data sources: NASA Jet Propulsion Laboratory, ESA, International Astronomical Union. Orbital mechanics from NASA/JPL Horizons system.