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Saturn's Moon Helene


Credit: Image of Saturn's moon Helene. Credit: NASA
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Saturn's moon Helene -- Helene is a moon of Saturn, discovered by Laques and Lecacheux in 1980 from ground-based observations.

It is co-oribtal with Dione and located in its leading Lagrangian point (L4) and hence is sometimes referred to as "Dione B".

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Orbital radius: 377,400 km
Diameter: 33 km (36 x 32 x 30)
Mass: Unknown
Orbital period: 2.7369 days
Orbital inclination: 0.2�

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NASA

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