The dynamics of the G ring of Saturn: the satellite Aegaeon and the arc
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| Full text | |
| Author(s): |
Deienno, Rogerio
;
Sanchez, Diogo Merguizo
;
Bertachini de Almeida Prado, Antonio Fernando
;
Smirnov, Georgi
Total Authors: 4
|
| Document type: | Journal article |
| Source: | CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY; v. 126, n. 4, p. 433-459, NOV 2016. |
| Web of Science Citations: | 5 |
| Abstract | |
The goal of the present research was to study the use of solar radiation pressure to place a satellite in an orbit that makes it to re-enter the atmosphere of the Earth. This phase of the mission is usual, since the orbital space around the Earth is crowded and all satellites have to be discarded after the end of their lifetimes. The technique proposed here is based on a device that can increase and decrease the area-to-mass ratio of the satellite when it is intended to reduce its altitude until a re-entry point is reached. Equations that predict the evolution of the eccentricity and semi-major axis of the orbit of the satellite are derived and can be used to allow the evaluation of the time required for the decay of the satellite. Numerical simulations are made, and they show the time required for the decay as a function of the area-to-mass ratio and the evolution of the most important orbital elements. The results show maps that indicate regions of fast decays as a function of the area-to-mass ratio and the initial inclination of the orbit of the satellite. They also confirmed the applicability of the equations derived here. The numerical results showed the role played by the evection and the Sun-synchronous resonances in the de-orbiting time. (AU) | |
| FAPESP's process: | 14/06688-7 - Dynamics of artificial satellites |
| Grantee: | Antônio Fernando Bertachini de Almeida Prado |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 14/22295-5 - Study of the dynamics of artificial satellites around triple systems |
| Grantee: | Diogo Merguizo Sanchez |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 14/02013-5 - Orbital evolution of the asteroids in the first 700 MY of the solar system |
| Grantee: | Rogerio Deienno |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |