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An Earth trojan is an asteroid that orbits the Sun in the vicinity of the Earth–Sun Lagrangian points (leading 60°) and (trailing 60°), which means they have an orbit similar to Earth's. Only one Earth trojan has so far been discovered. The name trojan was first used in 1906 for the Jupiter trojans, the asteroids that were observed near the Lagrangian points of Jupiter's orbit. == Members == ;Current (leading) *: A 300-meter-diameter asteroid, discovered using the Wide-field Infrared Survey Explorer (WISE) satellite. It is the only confirmed Earth trojan.〔 〕〔 〕 (trailing) : No known objects are currently thought to be trojans of Earth. 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「Earth trojan」の詳細全文を読む スポンサード リンク
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