Rafael Sfair

TL;DR: The G ring arc hosts the smallest satellite of Saturn, Aegaeon, observed with a set of images sent by Cassini spacecraft as discussed by the authors, which is responsible for depleting the arc dust population by removing them through collisions.

TL;DR: In this article, the authors observed a stellar occultation by the Galilean moon Europa (J2) and proposed a campaign for observing stellar occultations for all Galilean moons, where the authors measured the light flux of the occulted star and object to determine the time when the flux dropped with respect to one or more reference stars, and the time that it rose again for each observational station.

TL;DR: In this paper, the location and linear stability of the equilibrium points were found and the stability of these points were confirmed by performing numerical simulations of massless particles around the asteroid, which also showed an asymmetry in the size of the stable regions.

TL;DR: In this article, the authors used stellar occultations to constrain the physical parameters of the Centaur and its rings, and determined the structure of the rings and obtained precise astrometrical positions of Chariklo.

TL;DR: In this paper, the authors performed numerical integrations of a system composed of 729 clones of Chiron, the Sun, and the giant planets and found that Chiron is more likely to remain in an orbit with a relatively low inclination and high eccentricity.