Hansen

Peter Andreas, a German astronomer; born in Tondern, Schleswig, Dec. 8, 1795. In 1842 he was awarded the gold medal of the Royal Astronomical Society of Great Britain for his work on the perturbations of Jupiter and Saturn and on the Lunar Theory. In 1857 the British — published his ‘ Lunar ables” (in French), in which he had embodied the results of his now completed lunar theory. In 1860 the Royal Astronomical Society for the second time conferred_upon him its gold medal, and the British government awarded him $5.000 in acknowledgment of his services to astronomy and navigation in the completion of this great work. He died in Gotha, Germany, March 28, 1874.