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・ 1442 in Ireland
・ 1443
・ 1443 in Ireland
・ 1443 Ruppina
・ 1444
・ 1444 Pannonia
・ 144496 Reingard
・ 1445
・ 1446
・ 1446 in Ireland
・ 1446 Sillanpää
・ 144633 Georgecarroll
・ 144692 Katemary
・ 1447
・ 1447 in Ireland
1447 Utra
・ 1448
・ 1448 Yellow River flood
・ 1449
・ 1449 in Ireland
・ 1449 Virtanen
・ 144P/Kushida
・ 144th Airlift Squadron
・ 144th Battalion (Winnipeg Rifles), CEF
・ 144th Delaware General Assembly
・ 144th Division (Imperial Japanese Army)
・ 144th Field Artillery Battalion (United States)
・ 144th Fighter Wing
・ 144th Georgia General Assembly
・ 144th Guards Motor Rifle Division


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1447 Utra : ウィキペディア英語版
1447 Utra

1447 Utra, provisional designation 1938 BB, is a stony asteroid and slow rotator from the inner regions of the asteroid belt, about 13 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 26 January 1938.〔
The S-type asteroid orbits the Sun at a distance of 2.4–2.6 AU once every 4.04 years (1,474 days). Its orbit shows an eccentricity of 0.04 and is tilted by 5 degrees to the plane of the ecliptic. It has a very long rotation period of hours and an albedo of 0.38 and 0.30, according to the results from the Akari and Wide-field Infrared Survey Explorer missions, respectively.〔〔〔
The minor planet was named after the northeastern Finnish town, Utra, birthplace of the discoverer.〔
== References ==

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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「1447 Utra」の詳細全文を読む



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