Co-orbital moon

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Co-orbital moons are natural satellites that orbit at the same distance from their parent planet as another satellite, or at a similar distance.

[edit] Trojan moons

Main article: Trojan moon

Another kind of co-orbital are Trojan moons, which are unique to the Saturnian System. Tethys has two trojan moons (Telesto and Calypso). Dione has two trojan moons (Helene and Polydeuces).

[edit] See also

• Natural satellite
• Quasi-satellite