Neptune,
The Mystic
More Pictures of Neptune
Neptune is the 8th
planet from the sun and the 4th largest behind Uranus. Neptune is 3.8
times as wide as the Earth and has a mass only 17 times greater than the
Earth's.
Like the other Jovian
or Jupiter like planets, Neptune has a very fast rotation rate in comparison to
its size. Neptune's atmosphere
|
Diameter |
30,700 mi |
Mass |
2.27X 1026 lbs. (17.23 Earth Wt.) |
|
Rotational Period |
16:03 |
Average Density |
103.584 lb/ft3 |
|
Surface Gravity |
38.28 ft/s2 (cloud base) |
Escape Velocity |
15.534 mi/sec |
|
Surface Temperature |
-357°F (cloud tops) |
Average Albedo |
0.35 |
|
Average Distance from Sun |
30.0611 A.U . (27.94 x 108 mi) |
Eccentricity of orbit |
0.0100 |
|
Maximum Distance from Sun |
30.4 A.U. (28.21 x 108 mi) |
Inclination of orbit to ecliptic |
1° 46' 27" |
|
Minimum Distance from Sun |
29.8 A.U (27.66 x 108 mi) |
Inclination of equator to orbit |
28° 48' |
|
Average Orbital Velocity |
3.374 mi/sec |
Orbital Period |
164.793 yrs (60,189 days) |
|
Oblateness |
--- |
Satellites |
13 |
An
A.U. is the distance from the sun to the earth (9.3x107 miles).
Oblateness is the fraction by which the equatorial diameter exceeds the polar
diameter. Albedo is the fraction of light reflected off of an object.
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