Despina (moon)

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Despina ("dess PEE nuh" or "dess PYE nuh") is the third known moon of Neptune. It was discovered in 1989 by Voyager 2, and very little is known about it. It is named after Despina, a nymph who was a daughter of Poseidon.

Despina 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: 52,526 km
Mean diameter: 150 km
Mass: 2.1×10¹⁸ kg
Orbital period: 0.335 d
Orbital inclination: 0.064°

... | Thalassa | Despina | Galatea | ...

Neptune
Naiad \| Thalassa \| Despina \| Galatea \| Larissa \| Proteus \| Triton
Nereid \| S/2002 N 1's group \| S/2002 N 2's group \| S/2002 N 4's group
(For other moons, see: Neptune's natural satellites)


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