| Pluto is the last planet in our solar system. It is the smallest planet and which is only two third of the size of the Moon. Little is known about this planet since it is the only planet not visited by any spacecrafts. Pluto is a unique planet in size, orbit and composition. In some places its orbit lies within Neptune's orbit. Similar to Uranus, Pluto rotates with its poles almost in its orbital plane. Pluto's icy surface is composed of nitrogen, methane and traces of carbon monoxide. |
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Pluto Statistics:
Mass (kg): 1.27x1022 Diameter (km): 2300 Average Density (kg/m3): 2030 Escape Velocity (m/sec): 1100 Rotation Period (Earth days): 6.39 Tilt of Axis (o): 122.5 Orbit inclination (o): 17.15 Average Surface Temperature (oF): -387 to -369 Atmospheric Components: 98% Nitrogen, 2% Methane Number of Satellites: 1 (Charon) Number of Rings: 0 |
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