134340 Pluto
Diameter 2,368 km
1,184 mi.
Distance from the Sun 5.9 billion km
3.6 billion mi.
Astronomical Unit 39.2
Mass (1.305±0.007)×10^22 kg

0.00218 Earths

Density 2.03±0.06 g/cm^3
Nickname(s) MP134340
Farthest Planet
Number of moons more than 5
Length of day 6 days
Length of year 248 years
Atmosphere Components Nitrogen
Symbol Pluto symbol

Pluto (134340) is the second-most-massive known dwarf planet in the Solar System (after Eris) and the tenth-most-massive body observed directly orbiting the Sun.[1] Although Pluto was discovered in 1930, limited information on the distant object delayed a realistic understanding of its characteristics. Pluto is the second largest known dwarf planet and tenth largest orbiting the Sun. From its time of discovery in 1930 to 2006 it was considered to be the ninth planet in the solar system, but because additional objects have been discovered including Eris which is 27% more massive, the IAU reclassified Pluto and the other objects as dwarf planets.[2]


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