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1405 Sibelius : ウィキペディア英語版 | 1405 Sibelius
1405 Sibelius, provisional designation 1936 RE, is a stony asteroid from the inner regions of the asteroid belt, about 7 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 12 September 1936.〔 The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,235 days). Its orbit shows an eccentricity of 0.15 and is tilted by 7 degrees to the plane of the ecliptic. It has a rotation period of 6.1 hours and a geometric albedo of 0.14 to 0.46, according to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Wide-field Infrared Survey Explorer and subsequent NEOWISE mission.〔〔〔 The minor planet was named after Finnish violinist and composer of the late Romantic and early-modern periods, Jean Sibelius (1865–1957).〔 == References ==
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