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Дата индексирования: Mon Oct 1 20:43:37 2012
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neptune

Neptune

Neptune is the coldness kingdom.

The symbol of NeptuneNeptune
Diameter 48 600 km
Mass 1,03*10^26 kg
Density 2300 kg/m^3
The period of rotation 16 h 03 min
The average distance from the Sun 30,06 Ю.u.
The period of revolution 164,79 years
Excentricity of the orbit 0,009
The orbit’s slope 1,77°
Neptune

Neptune is the eighth from the Sun great planet. It looks like a star of 7,8 star value (it can not be seen by naked eye).

The composition and structure.

From all the elements in Neptune the main are hydrogen and helium in such ratio(approximately) as in the Sun in one helium atom falls 20 atoms of hydrogen. In the Neptune like in the other planets then had been the multi-layered differentiation of the substance, and as a result a long icy shell was generated. According to the theoretical data there is a cloak and a core in Neptune. The core mass may by 90% of the entire planet’s mass. The effective temperature is 38K but to the centre it increases up to (12-14)* 10^3K.

Neptune’s satellites.

6 satellites move near Neptune. The biggest is Triton. Its radius is 1600km.The second satellite is Nereida (radius is 100km).