Known Space -- Sol -- | Pluto |
The final planet of the Solar system is Pluto, a frozen ball of gasses. Together with its moon, Charon, some consider it a double planet. Yet others don't consider it a planet at all, but the furthest most Kuniper Belt object.
It has the most eccentric orbit of any planet, ranging from 4.4 billion km to 7.4 billion km. For 20 years out of each 248 year orbit it is actually closer to the Sun than Neptune (but because of the difference in orbital inclination it will never hit). Charon is more than half the diameter of Pluto.
Orbital Distance: 29.650 AU - 49.280 AU (average 39.500 AU) Eccentricity: 0.248 Local Year: 90,465.00 days (247.7 years) Orbital Velocity: 4.7 km/s (average) Inclination: 17.15° Local Day: 6.375 day (6d 9h 0m 17s) retrograde Axial Tilt: 122.460° Diameter: 2,324 km Composition: Mainly frozen gasses Density: 2.00 g/cm3 Mass: 1.31 x 1016 tonnes (0.0022 earths) Gravity: 0.06 G Escape Velocity: 1.18 km/s Area: 16.968 million km2 Surface Material: Nitrogen ice, methane ice, and carbon monoxide ice Atmosphere: Very thin nitrogen Pressure: 0.001 atm Albedo: 0.48 Temperature: -230°C |
Satellite Distance Month Day Diameter Charon 19,000 km 6.400 d 6.400 d 0.093 |