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Lists of comets : ウィキペディア英語版 | Lists of comets
Non-periodic comets are seen only once. They are usually on near-parabolic orbits that will not return to the vicinity of the Sun for thousands of years, if ever. Periodic comets usually have elongated elliptical orbits, and usually return to the vicinity of the Sun after a number of decades. The official names of non-periodic comets begin with a "C"; the names of periodic comets begin with "P" or a number followed by "P". Comets that have been lost or disappeared have names with a "D". ==Lists==
* List of numbered comets * List of non-periodic comets * List of periodic comets * List of comets visited by spacecraft * List of Great Comets * List of comets by type * List of Halley-type comets * List of historic comet close approaches
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「Lists of comets」の詳細全文を読む
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