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588 Achilles
588 Achilles is the first Jupiter trojan discovered. It was discovered on February 22, 1906, by the German astronomer Max Wolf. It is named after Achilles, the fictional hero from the ''Iliad''. It orbits in the Lagrangian point of the Sun–Jupiter system. After a few such asteroids were discovered, the rule was established that the point was the "Greek camp", whereas the point was the "Trojan camp", though not before each camp had acquired a "spy" (624 Hektor in the Greek camp and 617 Patroclus in the Trojan camp).
Based on IRAS data, Achilles is 135 km in diameter and is the 6th-largest Jupiter trojan.〔
Photometric observations of this asteroid during 1994 were used to build a light curve showing a rotation period of 7.32 ± 0.02 hours with a brightness variation of 0.31 ± 0.01 magnitude. This result is in good agreement with prior studies.〔
== 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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