2024年1月11日 · 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

It is the largest known trans-Neptunian object by volume, by a small margin, but is less massive than Eris. Like other Kuiper belt objects, Pluto is made primarily of ice and rock and is much smaller than the inner planets. Pluto has roughly one …

2016年3月18日 · Although all of the planets beyond Mars are gas giants, Pluto is small and rocky. The tiny body has a mass of only 1.31 x 10 22 kilograms, about two-tenths of a percent of Earth's. It has...

2025年1月19日 · Pluto’s mean distance from the Sun is about 5.9 billion km (3.7 billion miles or 39.5 astronomical units). Is Pluto's orbit circular or eccentric? Pluto's orbit is more elongated, or eccentric, than any of the planetary orbits and more inclined (at 17.1°) to the ecliptic.

2024年11月5日 · Pluto is a complex and mysterious world with mountains, valleys, plains, craters, and glaciers. It is located in the distant Kuiper Belt. Discovered in 1930, Pluto was long …

Through careful measurements of new images, scientists determined that Pluto is actually larger than previously thought: 2,370 kilometers in diameter. Because of the orbital interactions between Pluto and its moon Charon, Pluto’s mass is well known and understood (1.31 x 1022 kg).

The mass of Pluto is less than .024 percent than that of earth (1.31×10_22 kg). That is roughly seven times (.0021) the mass of Earth. Its diameter is 2,390 km, which is relatively smaller than that of the Earth’s moon. The density on Pluto ranges from 1.8 to 2.1 grams per centimeter cubed. The gravity on Pluto is 7% than the gravity of Earth.

2024年3月22日 · The Planetary Fact Sheet provides key information about the planets in our solar system, including their size, mass, and distance from the Sun.

2022年5月15日 · By the late 1970s, Pluto's mass was estimated to be a mere 0.0015 Earths. Pluto was once believed to be so massive it could influence the orbit of the gas giants, yet it turned out to be one of the smallest known worlds in the solar system.

2009年12月21日 · The following Pluto fact sheet is based on NASA’s excellent planetary fact sheets. Pluto is no longer a planet, but a dwarf planet. Mass: 0.0125 x 10 24 kg Volume: 0.715 x 10 10 km 3