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Pluto has five known moons: Charon, the largest, whose diameter is just over half that of Pluto; Styx; Nix; Kerberos; and Hydra. Pluto and Charon are sometimes considered a binary system because the barycenter of their orbits does not lie within either body, and they are tidally locked.
Pluto has an equatorial diameter of about 1,477 miles (2,377 kilometers). Pluto is about 1/5th the width of Earth. From an average distance of about 3.7 billion miles (5.9 billion kilometers), Pluto is about 39 times farther away than the Earth is from the Sun.
When New Horizons arrived at Pluto, it measured the diameter of the world to be 1,473 miles (2,370 kilometers) across, about two-thirds the diameter of Earth's moon. This makes it larger...
Recent measurements obtained by New Horizons indicate that Pluto has a diameter of 2370 km, 18.5% that of Earth’s, while Charon has a diameter of 1208 km, 9.5% that of Earth’s. The approximate sizes of Pluto’s moons Nix and Hydra compared to Denver, Colorado.
Pluto’s mean distance from the Sun, about 5.9 billion km (3.7 billion miles or 39.5 astronomical units), gives it an orbit larger than that of the outermost planet, Neptune. (One astronomical unit [AU] is the average distance from Earth to the Sun—about 150 million km [93 million miles].)
Pluto has a diameter of 1,473-miles (2,370-kilometres), which is even smaller than Earth’s moon, which has a diameter of 2,159-miles (3,475-kilometres). Pluto is only 18.5% the diameter of Earth and its surface area is only slightly larger than that of Russia, the largest country on Earth.
Pluto is about two-thirds the diameter of Earth's Moon and probably has a rocky core surrounded by a mantle of water ice. Interesting ices like methane and nitrogen frost coat the surface. Due to its lower density, Pluto's mass is about one-sixth that of Earth's Moon.
Pluto Atmosphere. Surface Pressure: ~13 microbar Surface temperature: 24 - 38 K (-247 - -233 C) Scale height: ~18 km lower atmosphere, ~50 km above 30 km Mean molecular weight: ~28 Atmospheric composition: 99% Nitrogen (N 2), 0.5% Methane (CH 4), 0.05% Carbon Monoxide (CO), trace HCN, C 2 H x hydrocarbons.
Pluto has a diameter of about 1,473 miles (2,372 kilometers). That’s about 18% of Earth’s diameter! If you were to stack Plutos on top of each other, it would take about nine Plutos to reach the same height as the Earth. Pluto is only about two-thirds the size of Earth’s moon.
Pluto is one of the smallest and farthest worlds from the sun, having a diameter of 2,376 kilometers and an average distance from the sun of 3.7 billion miles.