Janus is one of the moons of Saturn. It was discovered in 1966 by the astronomer Diane K. P. F. F. (Diane) while studying photographs taken by the Voyager spacecraft. Janus is classified as a co-orbital satellite, meaning it shares its orbit with another moon, Epimetheus. The two moons have a unique relationship; they periodically swap orbits due to their gravitational interactions.
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