|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ЦЭМИ РАН |
||
Dynamics of the binary asteroid system(22) Kalliope–Linus based on observationsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 19 декабря 2019 г.
- Авторы: Emelyanov N.V., Safovov B.S., Kupreeva C.D.
- Журнал: Monthly Notices of the Royal Astronomical Society
- Том: 489
- Год издания: 2019
- Издательство: Oxford Journals, Oxford University Press
- Местоположение издательства: Oxford, UK, England
- Первая страница: 3953
- Последняя страница: 3965
- DOI: 10.1093/mnras/stz2411
- Аннотация: The aim of this article is to determine the dynamical parameters of the asteroid (22) Kalliopewith its satellite Linus, based on astrometric observations of this system. We use a modelof the motion taking into account the gravitational influence of the primary’s axisymmetricnon-sphericity. This factor leads to precession of the line of apsides of the satellite, as well asprecession of its orbit around the primary’s axis of symmetry. The axisymmetric gravitationalfield of the primary is formed by the time-averaged field of the fast-rotating body of Kalliope.All available observations of the Kalliope–Linus system were divided into groups, eachcontaining observations close in time. For each group, parameters of the fixed Keplerianorbit were determined. Thus, the behaviour of the satellite’s orbit axis over about 16-yr timeintervals was studied. Contrary to the expected uniform precession of the orbital plane, wediscovered abnormal prograde motion of the ascending node in the first seven years, whichbecame retrograde in the next nine years. The amplitude of the change is about 120◦.Wemakean attempt to explain such motion by effects not taken into account in the adopted dynamicalmodel. It is shown that effects not taken into account cannot explain the oscillatory motion ofthe orbital node found. Using 121 available observations, two formal solutions for all fittedparameters were determined.
- Добавил в систему: Емельянов Николай Владимирович