Abstract The origin and evolution of Martian moons have been intensively debated in recent years. It is proposed that Phobos Deimos may originate directly from the splitting an ancestral moon orbiting at around synchronous orbit. At this hypothetical splitting, apocenter inner (presumed as Phobos) pericenter outer Deimos) would coincide, that, their semimajor axes reside inside outside orbit wi...

In this paper, we study a kinetic model describing the evolution of planetary dust under action planet and its satellites. particular, focus our attention on formation rings role shepherd moons. The equation considered physical phenomenon is Vlasov type, posed in an evolutionary domain time. We first some theoretical properties model. Then, describe numerical method, suitable for equations doma...

Context. The Cassini-Huygens space mission provided a huge amount of data for the Saturnian system. While ended in September 2017, there is still much information to be retrieved from data. Aims. Here, their orbital motion, we infer interior five inner moons, Atlas, Prometheus, Pandora, Janus, and Epimetheus. Our results benefit recent study shape these which provides better estimation 3D volum...

INTRODUCTION Halo nevus (HN) is a rare dermatologic entity characterized by a typical whitish rim encircling the existing melanocytic nevus resembling a halo. The clinical picture is suggesting its diagnosis, but so far only several dermoscopic descriptions of halo nevus have existed in the PubMed database. AIM To present the clinical and dermoscopic characteristics of halo nevus observed in ...

We develop a method for recovering the global density distribution of the ancient Galactic stellar halo prior to disk formation, based on the present orbits of metal-poor stars observed in the solar neighborhood. The method relies on the adiabatic invariance of the action integrals of motion for the halo population during the slow accumulation of a disk component, subsequent to earlier halo for...

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