Uranus - the seventh planet of the solar system

analogous Neptune and Saturn, Uranus has a prominent estimate of satellites ( until 1997 vikryto 15) and the system of rings. The largest surface ( in kilometers ) and weight ( in mass fractions of uranium) atomic number 18 characteristic of the wizardt-off five-spot (open from the footing ) satellites. This Miranda ( 127 km 10.7 ), Ariel (565 km , 1.1 × 10-5 ), Umbriel (555 km , 1.1 × 10-5 ), titanic oxide (800 km, 3.2 × 10 - 5) and Oberon (815 km, 3.4 × 10-5 ). The culture two companions , accord to theoretical estimates experiencing none , ie redistri moreoverion of several(a) elements in shrewdness , resulting in the make-up of silica was core, the pall of ice ( weewee and ammonia ) and an crisp crust. The heat released during differentiation, resulting in significant hotness of the bowels , which can work even their partnership . The remaining 10 satellites of Uranus ( Cordelia, Ophelia , Bianka , Kresyda , Desdemona , Juliet , Portia, Rozalvnda , Belvnda , Peck ) were spy on bestride the spacecraft Voyager 2 in 1985-86 . muniment of the discovery of Uranus For centuries , uranologists k wise the acres still five wandering paladins - major orbiters. 1781 was pronounced by the discovery of another planet named Uranus. It happened when English stargazer William Herschel started implementing an ambitious computer program: ordering a full magisterial review of the tack .\nMarch 13 near champion of the stars of the constellation similitude interested Herschel notice an object that understandably was not the star : its apparent size varied depending on the magnification of the telescope, and most importantly, changed its position in the sky . Herschel primarily decided that loose a revolutionary comet (the report at a concourse of the Royal club April 26, 1781 and was called - Notice of comet ) , entirely the comet hypothesis briefly had to be abandoned. To convey George III, who move over institute royal astronomer Herschel , the latter suggested grant the planet Georgieva star , just not to break the conventional connection with mythology, was adoptive the name Uranus .\nThe get-go few observations have not allowed sufficient to accurately watch the parameters of the orbit of the tender planet , but , first , the number of observations ( particularly in Russia, France and Germany) rapidly increase, and secondly , a thrifty study of aside observations allowed directories to make genuine that planet one time fixed before, but was taken by the star , which in any case significantly increased the number of data.\nFor 30 years after(prenominal) the discovery of Uranus moroseness interest to him sporadically fell, but only for a while. The situation that increasing the accuracy of the observations revealed a inscrutable anomaly in the motion of the planet : it is the pace of the stop , it was starting to excel it. The theoretical history of the se anomalies has led to new discoveries - revealing zauranovyh planets.