Herschel discovers Titania and Oberon

On 11 January 1787 the German–British astronomer William Herschel discovered Titania, the largest moon of Uranus, and on the same day Oberon, the planet's second-largest and outermost major moon. The two bodies were initially referred to simply as the first and second satellites of Uranus. For nearly fifty years after the discovery, neither moon was observed with any instrument other than Herschel's own, although both can be seen from Earth with a present-day high-end amateur telescope.