NASA states that Pluto's mass is approximately 13,100,000 trillion tons. Pluto's diameter is 1,413 miles or 2,274 kilometers, making it under a sixth of the width of Earth.
Pluto's mass is about 1/500 of Earth's overall mass, and it has the lowest mass of any planet in the solar system. It is 39 times farther away from the sun than Earth, ranging from 2.8 to 4.6 billion miles away, and it has an elliptical orbit, sometimes coming closer to the sun than Neptune. Though Pluto once was considered the ninth planet in the solar system, it was reclassified as a dwarf planet because of its small size.