The planet Neptune
| Neptune: |
| Mass: | 102 x 10^24 kg |
| Diameter: | 49528 km |
| Average distance from Sun: | 4500 x 10^9m |
| Rotation period: | 19.1 hours |
| Revolution period: | 164.8 years |
| Mean density : | 1640 kg/m³ |
| Force of gravity: | 11m/s² |
| Orbit inclination : | 1.77º |
| Moons: | 8 |
Neptune Information:
- The eighth planet from the Sun and the fourth largest.
- The smallest of the four gas giants.
- Composed of a deep atmosphere around a liquid surface and sometimes a solid core.
- The atmosphere consists of mostly hydrogen and helium.
- Neptune has five thin rings.
- It's largest moon is Triton. Triton is the coldest object with -235C in our solar system.
- The winds on Neptune is the strongest (up to 600 m/s) known in our solar system.
- Johann Gottfried Galle (German astronomer) first observed the planet in 1846.
Neptune Pics:
| 1 | 2 | 3 |
4 | 5
Tour guide:
Copyright © 1999 Magnus Rasmussen
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