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See also:ARGELANDER, See also:FRIEDRICH WILHELM See also:AUGUST (1799-1875) , See also:German astronomer, 'was See also:born at See also:Memel on the 22nd of See also:March 1799. He studied at the university of See also:Konigsberg, and was attracted to See also:astronomy by F. W. See also:Bessel, whose assistant he became (See also:October 1, 1820). His See also:treatise on the path of the See also:great See also:comet of 1811 appeared in 1822; he was, in 1823, entrusted with the direction of the See also:observatory at See also:Abo; and he exchanged it for a similar See also:charge at See also:Helsingfors in 1832. His admirable investigation of the See also:sun's See also:motion in space was published in 1837; and in the same See also:year he was appointed See also:professor of astronomy in the university of See also:Bonn, where he died on the 17th of See also:February 1875. He also published Observations .Astrono-micae• Alkae Factae (3 vols., 183o-1832); DLX Stellarum Fixarum Positiones Mediae (1835); and the first seven volumes of Astronomische Beobachtungen auf der Sternwarte zu Bonn (1846-1869) , containing his observations of See also:northern and See also:southern See also:star-zones, and his great Durchmusterung (vols. iii.-v., 1859-1862) of 324,198 stars, from the See also:north See also:pole to -2-° Dec. The corresponding See also:atlas was issued in 1863. His observations (begun in 1838) and discussions of variable stars were embodied in vol. vii. of the same See also:series.
See E. See also:Schonfeld in Vierteljahrsschrift der Astronomischen Gesellschaft, x. pp. 150-178.
End of Article: ARGELANDER, FRIEDRICH WILHELM AUGUST (1799-1875)
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