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BookmarkPluto, designated (134340) Pluto, in the Minor Planet Center catalogue, is the second-largest known dwarf planet in the solar system.
It orbits between 29 and 49 AU from the Sun, and was the first Kuiper Belt Object to be discovered.
Approximately one-fifth the mass of the Earth's Moon, Pluto is primarily composed of rock and ice.
It has an eccentric orbit that is highly inclined with respect to the planets and takes it closer to the Sun than Neptune during a portion of its orbit..
For more information about the topic Pluto, read the full article at Wikipedia.org, or see the following related articles:
Mercury (planet) — Mercury is the innermost and smallest planet in the solar system, orbiting the Sun once every 88 days. It ranges in brightness from about −2.0 ... > read more
Deimos (moon) — Deimos is probably an asteroid that was perturbed by Jupiter into an orbit that allowed it to be captured by Mars, though this hypothesis is still in ... > read more
Neptune's natural satellites — Neptune has 13 known moons. The largest by far is Triton, discovered by William Lassell just 17 days after the discovery of Neptune itself. It took a ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Pluto at Wikipedia.org. See the Wikipedia copyright page for more details.
