Johann Franz Encke. Portrait of the German astronomer Johann Franz Encke (1791-1865). Encke was the director of the Seeburg Observatory in Switzerland from 1822-1825. He later became secretary of the Academy of Services at Berlin,Germany. He also became director of Berlin's observatory. In 1819,Encke showed that an object observed four times since 1805 was a comet. This comet is now called Encke's comet | |
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