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Argelander, Friedrich Wilhelm August

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Argelander, Friedrich Wilhelm August (frē`drĭkh vĭl`hĕlm ou`gst är`gəländər), 1799–1875, German astronomer. He became director of the observatory at the Univ. of Bonn in 1837 and continued there the work of determining the positions of stars that F. W. Bessel Bessel, Friedrich Wilhelm , 1784–1846, German astronomer and mathematician. He became (1810) director of the new observatory at Königsberg and professor of astronomy at the Univ. of Königsberg.
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 had begun at Königsberg. The results of his observations appear in the Bonner Durchmusterung (1862), which records the positions and brightness of more than 324,000 stars (up to the ninth magnitude) in the northern heavens.


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