| Meaning | God of the Sea |
| Position | 8 |
| Discoverer | Johann Elert Bode |
| Discovered | 1781 |
| Length of Day ( hrs ) | 16.11 |
| Distance from Sun ( 10^6Km ) | 4495.1 |
| Volume (10^10 km3) | 6254 |
| Equatorial Radius | 24764 |
| Volumetric Mean Radius | 24624 |
| Ellipticity | 0.01708 |
| Mean Density | 1638 |
| Surface Gravity | 11.15 |
| Surface Acceleration | 11 |
| Escape Velocity | 23.5 |
| Orbit Period | 4495.06 |
| Orbit Eccentricity | 0.0113 |
| Average Temperature | -72K/-201C |
| Surface Pressure | >1000bars |
| Average Temperature | -72K/-201C |
| Atmosphere | Molecular hydrogen (H2) - 80.0% (3.2%); Helium (He) - 19.0% (3.2%); Methane (CH4) 1.5% (0.5%)
|
| Moon Count | 8 |
| Moons | Despina
Galatea
Larissa
Naiad
Nereid
Proteus
S/2002 N1
S/2002 N2
S/2002 N3
S/2002 N4
S/2003 N1
Thalassa
Triton
|
| Picture Copyright | N.A.S.A. |
