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1868 Thersites, also designated 2008 P–L, is a Jupiter trojan asteroid that orbits in the Lagrangian point of the Sun–Jupiter system, in the Greek camp of Jupiter trojan. It was discovered by Cornelis van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels on September 24, 1960 at Palomar Observatory in San Diego County, California. It orbits the Sun at a distance of 4.7–5.9 AU once every 12.27 years (4,482 days) and has a rotation period of 10.4 hours.〔 Photometric observations of this asteroid during 1994 were used to build a light curve showing a rotation period of 10.416 ± 0.014 hours with a brightness variation of 0.14 ± 0.01 magnitude.〔 The designation ''P–L'' stands for ''Palomar–Leiden'', named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden Observatory. The trio are credited with several thousand asteroid discoveries. The Trojan asteroid is named after Thersites, a Greek warrior who wanted to abandon Troy's siege and head home. The given name refers to the fact that the asteroid was discovered farthest from the Trojan libration point.〔 1869 Philoctetes was also discovered the same day by the same group. == References == 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「1868 Thersites」の詳細全文を読む スポンサード リンク
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