Pluto a dwarf planets is in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It was the first and the largest Kuiper belt object to be discovered. After Pluto was discovered in 1930, it was declared to be the ninth planet from the Sun.
Composition & structure
Atmospheric composition: Methane, nitrogen. Observations by New Horizons show that Pluto’s atmosphere extends as far as 1,000 miles (1,600 km) above the surface of the dwarf planet.
Magnetic field: It remains unknown whether Pluto has a magnetic field, but the dwarf planet’s small size and slow rotation suggest it has little to no such field.
Chemical composition: Pluto probably consists of a mixture of 70 percent rock and 30 percent water ice.
Internal structure: The dwarf planet probably has a rocky core surrounded by a mantle of water ice, with more exotic ices such as methane, carbon monoxide and nitrogen ice coating the surface.
Orbit and Rotation
- One day on Pluto takes about 153 hours
- Its axis of rotation is tilted 57 degrees with respect to the plane of its orbit around the sun
- Pluto takes 248 Earth years to make one revolution around the sun
Size and volume
- Dimeter of pluto is 2,376.6 km almost 18% of earth’s
- Volume is 6.39 x 109 km3
- Mass of pluto is 1.31 x 1022 kg almost 0.2% of earth’s