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・ 200th (Winnipeg) Battalion, CEF
・ 200th Airlift Squadron
・ 200th Division (National Revolutionary Army)
・ 200th Independent Motor Rifle Brigade
・ 200th Infantry Regiment (United States)
・ 200th Military Police Command (United States)
・ 200th Street
・ 200th Street (IRT Third Avenue Line)
・ 201
・ 201 (number)
・ 201 (South Park)
・ 201 BC
・ 201 CMR 17.00
・ 201 file
・ 201 North Charles Street Building
201 Penelope
・ 201 Poplar
・ 201 Portage
・ 201 series
・ 201 Squadron
・ 201 Squadron (Israel)
・ 201 Squadron (Portugal)
・ 2010
・ 2010 (disambiguation)
・ 2010 (film)
・ 2010 (Li-Ron Choir album)
・ 2010 (Rushden & Diamonds album)
・ 2010 1. deild karla
・ 2010 1000 Guineas
・ 2010 1000 km of Algarve


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201 Penelope : ウィキペディア英語版
201 Penelope

201 Penelope is a large main belt asteroid that was discovered by Austrian astronomer Johann Palisa on August 7, 1879 in Pola. The asteroid is named after Penelope, the wife of Odysseus in Homer's ''The Odyssey''.
Based upon the spectra of this object, it is classified as a M-type asteroid, indicating it may be metallic in composition.〔 It may be the remnant of the core of a larger, differentiated asteroid. Near infrared absorption features indicate the presence of variable amounts of low-iron, low-calcium orthopyroxenes on the surface. Trace amounts of water is detected with a mass fraction of about 0.13–0.15 wt%.〔 It has an estimated size of around 88 km.〔 With a rotation period of 3.74 hours, it is the fastest rotating asteroid larger than 50 km in diameter.〔
==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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