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Erik Prosperin (25 July 1739 – 4 April 1803) was a Swedish astronomer. Prosperin was a lecturer in mathematics and physics at Uppsala University in 1767, professor of observational astronomy (Observator) in 1773 – 1796, and professor of Astronomy in 1797 – 1798. He became a member of the Royal Swedish Academy of Sciences (KVA) in Stockholm in 1771 and a member of the Royal Society of Sciences in Uppsala in 1774 (secretary from 1786 onwards). Prosperin was a famous calculator of orbits: comets, planets, and their satellites. He calculated the orbits of the new (discovered in 1781) planet Uranus — for which he proposed the names ''Astraea'', ''Cybele'', and ''Neptune'' — and its satellites. He was also one of the first to calculate the orbit of the first asteroid, 1 Ceres, in 1801. Prosperin calculated orbits for a total of 84 comets, especially Comet Messier (C/1769 P1), Comet Lexell (D/1770 L1), the Great Comet of 1771 (C/1771 A1, 1770 II), Comet Montaigne (C/1774 P1), Comet Bode (C/1779 A1), and Comet Encke (2P/1795 V1). The asteroid 7292 Prosperin was named in his honor. ==External links== * (Prosperin at Uppsala University ) * (Nordisk familjebok: Proskenion – Prosperin ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Erik Prosperin」の詳細全文を読む スポンサード リンク
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