Georg Friedrich Wilhelm Rümker
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Georg Friedrich Wilhelm Rümke (December 31, 1832 - March 3, 1900) was a German astronomer
Born at Hamburg, he was the son of Carl Ludwig Christian Rümker. He was astronomer at the observatory at Durham, England, from 1853 to 1856. He then became assistant at the Hamburg observatory, and in 1862 was appointed director of the same institution. From 1884 he was the Hamburg delegate for the International Earth Measurement.