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Neptune's Moon Despina


Credit: Image of Neptune's moon Despina. Credit: NASA
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Planet Despina -- 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.

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Discovery

Discovered by Voyager 2
Discovered in 1989

Orbital characteristics

Orbital radius: 52,600 km
Orbital period: 0.334655 days
Orbital inclination: 0.07�

Physical characteristics

Diameter: 148 km
Mass: Unknown

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NASA

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