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The (153591) 2001 SN263 asteroid system, target of the first Brazilianinterplanetary space mission, is one of the known three triple systems withinthe population of NEAs. One of the mission objectives is to collect data aboutthe formation of this system. The analysis of these data will help in theinvestigation of the physical and dynamical structures of the components(Alpha, Beta and Gamma) of this system, in order to find vestiges related toits origin. In this work, we assume the irregular shape of the 2001 SN263system components as uniform density polyhedra and computationally investigatethe gravitational field generated by these bodies. The goal is to explore thedynamical characteristics of the surface and environment around each component.Then, taking into account the rotational speed, we analyze their topographicfeatures through the quantities geometric altitude, tilt, geopotential, slope,surface accelerations, among others. Additionally, the investigation of theenvironment around the bodies made it possible to construct zero-velocitycurves, which delimit the location of equilibrium points. The Alpha componenthas a peculiar number of 12 equilibrium points, all of them located very closeto its surface. In the cases of Beta and Gamma, we found four equilibriumpoints not so close to their surfaces. Then, performing numerical experimentsaround their equilibrium points, we identified the location and size of justone stable region, which is associated with an equilibrium point around Beta.Finally, we integrated a spherical cloud of particles around Alpha andidentified the location on the surface of Alpha were the particles have fallen.

Asteroid triple system 2001 SN263 : surfaces characteristics and dynamical environment