Stable retrograde orbits around the triple system 2001 SN263

Araujo, Rosana; Winter, O. C.; Prado, A. F. B. A.

doi:10.1093/mnras/stv592

Cited by 15 publications

(29 citation statements)

References 17 publications

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“…This restricted model is no longer justified when in the presence of systems containing higher values for the mass ratios between their three bodies, which requires non-restricted models. For instance, it is possible to mention applications in the investigation of triple stars and triple asteroid systems (see for instance Carvalho et al 2016a,b;Naoz et al 2011;Naoz 2016;Fang et al 2011;Prado 2014;Araujo et al 2015). Despite not being the model considered in the present study, it is worth to mention the opposite configuration, the one with a massless body orbiting a massive inner binary system and which is called the "outer" restricted problem (Ferrer and Osacar 1994;Farago and Laskar 2010;Boué and Laskar 2009;Naoz et al 2017).…”

Section: Introductionmentioning

confidence: 94%

Lifetime maps for orbits around Callisto using a double-averaged model

Santos

Carvalho

Prado

et al. 2017

Astrophys Space Sci

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The present paper studies the lifetime of orbits around a moon that is in orbit around its mother planet. In the context of the inner restricted three-body problem, the dynamical model considered in the present study uses the double-averaged dynamics of a spacecraft moving around a moon under the gravitational pulling of a disturbing third body in an elliptical orbit. The non-uniform distribution of the mass of the moon is also considered. Applications are performed using numerical experiments for the Callistospacecraft-Jupiter system, and lifetime maps for different values of the eccentricity of the disturbing body (Jupiter) are presented, in order to investigate the role of this parameter in these maps. The idea is to simulate a system with the same physical parameters as the Jupiter-Callisto system, but with larger eccentricities. These maps are also useful for validation and improvements in the results available in the literature, such as to find conditions to extend the available time for a massless orbiting body to be in highly inclined orbits under gravitational disturbances coming from the other bodies of the system.

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Section: Introductionmentioning

confidence: 94%

Lifetime maps for orbits around Callisto using a double-averaged model

Santos

Carvalho

Prado

et al. 2017

Astrophys Space Sci

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“…The gravitational perturbations of the Sun, Moon and the planets Venus, Earth, Mars, Jupiter and Saturn were studied and they revealed to be much smaller than the forces included in the model. The model derived in Masago et al (2016), used for a similar study in the system 2001SN 263 (Araújo et al 2012;Araújo et al 2015), is not applied in the present study because the effects of the flattening of the central body is not relevant in the present case. It means that the precession of the spacecraft and the smaller body of the asteroid system is not taken into account.…”

Section: Descriptionmentioning

confidence: 99%

Searching for some natural orbits to observe the double asteroid 2002CE26

Mescolotti

Prado

Chiaradia

et al. 2017

Astrophys Space Sci

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Knowledge of the Solar System is increasing with data coming from space missions to small bodies. A mission to those bodies offers some problems, because they have several characteristics that are not well known, like their shapes, sizes and masses. The present research has the goal of searching for trajectories around the double asteroid 2002CE 26 , a system of Near-Earth Asteroids (NEAs) of the Apollo type. For every trajectory of the spacecraft, the evolution of the distances between the spacecraft and the two bodies that compose the system is crucial, due to its impact in the quality of the observations made from the spacecraft. Furthermore, this study has a first objective of searching for trajectories that make the spacecraft remain as long as possible near the two bodies that compose the asteroid system, without the use of orbital maneuvers. The model used here assumes elliptical orbits for the asteroids. The effect of the solar radiation pressure is also included, since it is a major perturbing force acting in spacecrafts traveling around small bodies. The natural orbits found here are useful for the mission. They can be used individually or combined in several pieces by orbital maneuvers. Another point considered here is the importance of the errors in the estimation of the physical parameters of the bodies. This task is very important, because there are great uncertainties in these values because the measurements are based on observations made from the Earth. It is shown that a variation of those parameters can make very large modifications in the times that the spacecraft remains close to the bodies of the system (called

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“…The asteroids adopted to carry out this study are the asteroid Alpha and Beta of the triple asteroid system 2001SN 263 . This asteroid system was chosen to be analyzed due to a Brazilian mission known as Missao Aster [4,5,6,7].…”

Section: Introductionmentioning

confidence: 99%