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1208 Troilus
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1208 Troilus : ウィキペディア英語版
1208 Troilus

1208 Troilus, provisional designation 1931 YA, is a heavily tilted, large and dark Jupiter trojan, about 103 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany on 31 December 1931.〔
The carbonaceous asteroid has a relatively rare F-type spectrum, classified as a FCU-type in the Tholen taxonomy system. It orbits the Sun at a distance of 4.8–5.7 AU once every 12.03 years (4,394 days). Its orbit shows an eccentricity of 0.09 and is significantly inclined by 34 degrees to the plane of the ecliptic. It has a rotation period of 56 hours〔 with a more recent but provisional 2014-measurement of 63 hours.〔 The body's albedo amounts to 0.04, according to the surveys carried out by the space-spaced missions, IRAS, Akari, and WISE/NEOWISE.〔〔〔
The minor planet was named after the young Trojan prince Troilus, from Greek mythology. He is the son of King Priam ''(also see 884 Priamus)'', who in a medieval legend loved Cressida ''(see 548 Kressida)'' and lost her to Diomedes ''(see 1437 Diomedes)''. Troilus was killed by Achilles ''(see 588 Achilles)'' in the Trojan War.〔
== References ==


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