KFU. Card publication. Analysis of analytical and numerical dynamic lunar ephemerides

KAZAN
FEDERAL UNIVERSITY

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- 中文
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ANALYSIS OF ANALYTICAL AND NUMERICAL DYNAMIC LUNAR EPHEMERIDES

Form of presentation

Articles in international journals and collections

Year of publication

2020

Язык

английский

Authors, employees of KFU

Andreev Aleksey Olegovich, author

Zagidullin Artur Aleksandrovich, author

Nefedev Yuriy Anatolevich, author

Petrova Natalya Konstantinovna, author

Usanin Vladimir Sergeevich, author

Bibliographic description in the original language

Zagidullin A.A., Usanin V.S., Petrova N.K., Nefedyev Y.A., Andreev A.O. Analysis of analytical and numerical dynamic lunar ephemerides // Journal of Physics: Conference Series. – 2020. – V. 1697, No 1. – Article Number 012018.

Annotation

This work considers the analysis of libration dynamics of the planets' moons. To study such processes, it is necessary to use methods for investigating complex systems, as an influence from neighboring celestial bodies on spin-orbital motion of a moon should be taken into account. This fully applies to the Moon's rotation about its axis. The construction of modern theories of the physical libration of the Moon (PhLM) is based on gravimetric, seismic, satellite observations, and lunar laser ranging, which in its turn has allowed to increase the accuracy by several orders of magnitude compared to the PhLM theories of the end of the 20th century. To satisfy the modern requirements for accuracy of the physical libration theory, it is necessary to apply a precise ephemeris of the Moon's motion. In this paper, the DE421 modern numerical ephemeris is analyzed. The features of its construction and practical application are studied. The accurate values of ephemeris parameters are produced and an algorithm for determining the Moon's center of mass coordinates and establishing the angles of physical libration on the basis of DE421 is developed. As a result, a comparative analysis of the physical libration angles with the values produced by the analytic theory of physical libration is conducted. The calculations are made over a time period of 800 years. The comparative analysis shows that significant differences in the ephemerides of 15 and 80 arc seconds in longitude and latitude respectively are caused by the planets' gravity field, and those impacts should be considered when working with the analytic ephemeris.

Keywords

The name of the journal

Journal of Physics: Conference Series

URL

https://iopscience.iop.org/article/10.1088/1742-6596/1697/1/012018/meta

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=248482&p_lang=2

Resource files

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Zagidullin_2020_J._Phys.__Conf._Ser._1697_012018.pdf	0,54	pdf	show / download

Full metadata record

Field DC	Value	Language
dc.contributor.author	Andreev Aleksey Olegovich	ru_RU
dc.contributor.author	Zagidullin Artur Aleksandrovich	ru_RU
dc.contributor.author	Nefedev Yuriy Anatolevich	ru_RU
dc.contributor.author	Petrova Natalya Konstantinovna	ru_RU
dc.contributor.author	Usanin Vladimir Sergeevich	ru_RU
dc.date.accessioned	2020-01-01T00:00:00Z	ru_RU
dc.date.available	2020-01-01T00:00:00Z	ru_RU
dc.date.issued	2020	ru_RU
dc.identifier.citation	Zagidullin A.A., Usanin V.S., Petrova N.K., Nefedyev Y.A., Andreev A.O. Analysis of analytical and numerical dynamic lunar ephemerides // Journal of Physics: Conference Series. – 2020. – V. 1697, No 1. – Article Number 012018.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=248482&p_lang=2	ru_RU
dc.description.abstract	Journal of Physics: Conference Series	ru_RU
dc.description.abstract	This work considers the analysis of libration dynamics of the planets' moons. To study such processes, it is necessary to use methods for investigating complex systems, as an influence from neighboring celestial bodies on spin-orbital motion of a moon should be taken into account. This fully applies to the Moon's rotation about its axis. The construction of modern theories of the physical libration of the Moon (PhLM) is based on gravimetric, seismic, satellite observations, and lunar laser ranging, which in its turn has allowed to increase the accuracy by several orders of magnitude compared to the PhLM theories of the end of the 20th century. To satisfy the modern requirements for accuracy of the physical libration theory, it is necessary to apply a precise ephemeris of the Moon's motion. In this paper, the DE421 modern numerical ephemeris is analyzed. The features of its construction and practical application are studied. The accurate values of ephemeris parameters are produced and an algorithm for determining the Moon's center of mass coordinates and establishing the angles of physical libration on the basis of DE421 is developed. As a result, a comparative analysis of the physical libration angles with the values produced by the analytic theory of physical libration is conducted. The calculations are made over a time period of 800 years. The comparative analysis shows that significant differences in the ephemerides of 15 and 80 arc seconds in longitude and latitude respectively are caused by the planets' gravity field, and those impacts should be considered when working with the analytic ephemeris.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Analysis of analytical and numerical dynamic lunar ephemerides	ru_RU
dc.type	Articles in international journals and collections	ru_RU