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Dione is in a somewhat circular orbit around Saturn, at an average distance of 377,400 km. Its sidereal month is about 2.74 Earth days.
Dione is in a somewhat circular orbit around Saturn, at an average distance of 377,400 km. Its sidereal month is about 2.74 Earth days.
Dione appears to be in a 2:1 orbital resonance with [[Enceladus]], an inner moon. Some astronomers suggest that this causes significant [[tidal heating]] on Enceladus.<ref name=Britannica>Hubbard, William B. "[http://www.britannica.com/eb/article-9030539 Dione]." Encyclopædia Britannica. 2008. Encyclopædia Britannica Online. 12 June 2008.</ref>
Dione appears to be in a 2:1 orbital resonance with [[Enceladus]], an inner moon. Some astronomers suggest that this causes significant [[tidal heating]] on Enceladus.<ref name=Britannica>Hubbard, William B. "[https://www.britannica.com/eb/article-9030539 Dione]." Encyclopædia Britannica. 2008. Encyclopædia Britannica Online. 12 June 2008.</ref>
=== Co-orbital objects ===
=== Co-orbital objects ===