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Voyager 2 at Uranus (TPR) The thin crescent of blue Uranus is surrounded by its five major satellites in this montage created from images returned by Voyager 2 during its January 1986 encounter with the uranian system. The satellites are, clockwise from top left: Ariel, Umbriel, Oberon, Titania and Miranda. Voyager 2 discovered ten smaller satellites orbiting between the planet and Miranda, the innermost large satellite JPL / NASA