A distinguished astronomer, born at Hanover; son of a musician, and bred to the profession; came to England at the end of the Seven Years' War, and obtained sundry appointments as an organist; gave his leisure time to the study of astronomy and survey of the heavens; discovered the planet Uranus in 1781, which he called Georgium sidus in honour of George III., discovered also the two innermost belts of Saturn, as well as drew up a catalogue of 5000 heavenly bodies or clusters of them (1738-1822).