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Erik Prosperin
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, a member of the Royal Society of Sciences in Uppsala in 1774 (secretary from 1786 onwards), and a member of the American Philosophical Society in 1803. 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 L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweden
Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on the Scandinavian Peninsula in Northern Europe. It borders Norway to the west and north, Finland to the east, and is connected to Denmark in the southwest by a bridgetunnel across the Öresund. At , Sweden is the largest Nordic country, the third-largest country in the European Union, and the fifth-largest country in Europe. The capital and largest city is Stockholm. Sweden has a total population of 10.5 million, and a low population density of , with around 87% of Swedes residing in urban areas in the central and southern half of the country. Sweden has a nature dominated by forests and a large amount of lakes, including some of the largest in Europe. Many long rivers run from the Scandes range through the landscape, primarily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |