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1449 Virtanen
1449 Virtanen, provisional designation 1938 DO, is a stony asteroid from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 20 February 1938.〔
The asteroid is a member of the Flora family, a large group of rocky S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,210 days). Its orbit shows an eccentricity of 0.14 and is tilted by 7 degrees to the plane of the ecliptic. It has an albedo of 0.28, based on observations by the Wide-field Infrared Survey Explorer.〔〔
Photometric observations during 2008 showed a rotation period of 30.459 ± 0.005 hours and a brightness variation of 0.60 ± 0.02 in magnitude.〔
The asteroid was named after famous Finnish biochemist Artturi Virtanen (1895–1973), recipient of the 1945 Nobel Prize in Chemistry and president of the Academy of Finland for many years.〔
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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