Pluto is a dwarf planet in the solar system. Its formal name is 134,340 Pluto and its planetary symbol. Pluto is the ninth largest body that moves around the Sun. Upon first being discovered, Pluto once considered a planet, but once reclassified to a dwarf planet in 2006. It is the largest body in the quipa melt. Like other members of the quipa melt, Pluto is mainly made of rock and ice. It is quite small. It is about a fifth on the weight of the Earth's moon. It is only a third one third of its small moon. Pluto is very far from the Sun, so its temperature is very low. The average temperature on Pluto is minus 220-6 to minus 240 degrees Celsius. It has an odd orbit, and this orbit is very slow. It takes Pluto to 30 to 4090-4.47.4 billion km from the Sun. This causes Pluto to sometimes go closer to the Sun than Neptune, since it was discovered in 1930.