SI Units |
Earth Relative |
|
Radius (Equatorial) |
24,764,000 m |
3.883 x Earth |
Mass |
1.0243 x 1026 kg |
17.147 x Earth |
Temperature (Surface Mean) |
48 K (-225 °C) |
|
Gravity |
11.15 ms-2 |
1.14 g |
Escape Velocity |
23,500 ms-1 |
|
Axis Tilt |
28.32° |
|
Distance from Sun (Semi-Major) |
4.503444 x 1012 m |
30.1 AU |
Orbital Period |
164.79 Earth Years (60,190 Earth Days) |
|
Rotational Period |
0.67 Earth Days (19.1 Hours) |
|
Number of Moons |
13: including Triton, Nereid |
|
Atmosphere |
74% Hydrogen, 25% Helium |
|
Rings |
Yes, 3 main narrow rings |
|
Missions to Neptune |
Voyager 2 |
|
