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・ Quasi-delict
・ Quasi-derivative
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・ Quasi-empiricism in mathematics
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Quasi-Hilda comet
・ Quasi-homogeneous polynomial
・ Quasi-Hopf algebra
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Quasi-Hilda comet : ウィキペディア英語版
Quasi-Hilda comet
A quasi-Hilda comet (QHC) is a Jupiter-family comet that interacts strongly with Jupiter and undergoes extended temporary capture by it. These comets are associated with the Hilda asteroid zone in the 3:2 inner mean-motion resonance with Jupiter. Typically, asteroids in this zone have a semimajor axis between 3.70 and 4.20 AU, eccentricities below 0.30, and inclinations of no more than 20°.〔 Comets can be temporarily perturbed into this group and then perturbed back out again.〔 Eight percent of the comets that leave the 3:2 resonance end up impacting Jupiter.〔
==Known quasi-Hilda comets==
These numbered comets belong to the group of quasi-Hilda comet:〔
39P/Oterma was a quasi-Hilda before a close approach to Jupiter in 1963.〔 77P/Longmore falls outside of the bulk distribution because of its large eccentricity and inclination.〔 Comet Shoemaker–Levy 9 impacted with Jupiter in 1994.

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「Quasi-Hilda comet」の詳細全文を読む



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