КФУ. Карточка публикации. Variation of nongravitational parameters of comet Encke as a result of its decay

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VARIATION OF NONGRAVITATIONAL PARAMETERS OF COMET ENCKE AS A RESULT OF ITS DECAY

Форма представления

Тезисы и материалы конференций в российских журналах и сборниках

Год публикации

2010

Язык

русский

Авторы, сотрудники КФУ

Усанин Владимир Сергеевич, автор

Библиографическое описание на языке оригинала

Usanin V.S. Variation of nongravitational parameters of comet Encke as a result of its decay // Near-Earth Astronomy-2009. – Moscow: GEOS, 2010. – P. 209–215. (In Russian)

Аннотация

Near-Earth Astronomy-2009

Ключевые слова

Название журнала

Near-Earth Astronomy-2009

URL

http://agora.guru.ru/display.php?conf=oza-2009&page=program&PHPSESSID=6ifgl49ih14machq21if7f1q54

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https://repository.kpfu.ru/?p_id=106219

Полная запись метаданных

Поле DC	Значение	Язык
dc.contributor.author	Усанин Владимир Сергеевич	ru_RU
dc.date.accessioned	2010-01-01T00:00:00Z	ru_RU
dc.date.available	2010-01-01T00:00:00Z	ru_RU
dc.date.issued	2010	ru_RU
dc.identifier.citation	Usanin V.S. Variation of nongravitational parameters of comet Encke as a result of its decay // Near-Earth Astronomy-2009. – Moscow: GEOS, 2010. – P. 209–215. (In Russian)	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/?p_id=106219	ru_RU
dc.description.abstract	Near-Earth Astronomy-2009	ru_RU
dc.description.abstract	It is well known that nongravitational parameters of comets in the most extensively applicated in practice Marsden's model vary with time. The behaviour of nongravitational parameters of comet Encke is the most studied. In this work an assumption is made that these variations are due to the secular decay of comets as a result of volatile materials loss. To explain the decrease of nongravitational forces, an accelerated decrease of relation of effective evaporating area to mass compared with the uniform nucleus is required. Three variants of such nonuniformity are proposed: 1) deposition of a substantial nonvolatile mass not impending the sublimation; 2) generation of a little-massive crust shrinking the effective area by a linear law; 3) generation of a little-massive crust shrinking the effective area by an exponential law. Differential equations for all three cases (with the additional assumption of the nucleus constant shape) are derived, whose solutions are consistent qualitatively with the observed variation of nongravitational parameters of comet Encke. The adequacy of former two models over more than 150 years interval is shown. Possible causes of deviations out of this are reviewed.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Variation of nongravitational parameters of comet Encke as a result of its decay	ru_RU
dc.type	Тезисы и материалы конференций в российских журналах и сборниках	ru_RU