Planetocentric gravitational sphere of the dominating influence of perturbations from planet oblateness over perturbations from external bodies

The radius of a planetocentric sphere in which the gravitational perturbations caused by the planet oblateness dominate over perturbations caused by external bodies is determined in the paper. Specific features of long-term evolution of orbits of planetary satellites as a function of their average r...

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Bibliographic Details
Published in:Cosmic research 2010-04, Vol.48 (2), p.174-187
Main Author: Prokhorenko, V. I.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Astroparticles
Astrophysics and Cosmology
Physics
Physics and Astronomy
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
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Summary:The radius of a planetocentric sphere in which the gravitational perturbations caused by the planet oblateness dominate over perturbations caused by external bodies is determined in the paper. Specific features of long-term evolution of orbits of planetary satellites as a function of their average radii (semimajor axes) are considered using as an example two integrable cases in the doubly averaged problem taking into account joint influence of an external body and non-centrality of the planet’s gravitational field. For these cases, descriptions of the diversity of initial conditions leading (or not leading) to a crossing of the satellite orbit with the surface of a planet of finite radius are obtained.
ISSN:0010-9525
1608-3075
DOI:10.1134/S0010952510020073