Despina (moon)
Despina is the third known
moon of
Neptune. It was discovered in
1989 by
Voyager 2, and very little is known about it. It is irregularly shaped and shows no sign of any geological modification. Since its orbit is below Neptune's synchronous orbit radius it is slowly decaying due to
tidal forces and will one day break up into a
planetary ring or impact on Neptune's surface.
- Orbital radius: 52,600 km
- Diameter: 148 km
- Mass: Unknown
- Orbital period: 0.334655 days
- Orbital inclination: 0.07°