activity
20212026
most citedThe rings of (2060) Chiron: Evidence of an evolving system

14 citations · 20 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.EP2026

Size, shape, density, and atmospheric limit of (50000) Quaoar revealed from 14 years of stellar occultation

Giuliano Margoti, Felipe Braga-Ribas, José Luis Ortiz +173

We present results from 28 stellar occultations by the large Trans-Neptunian Object (50000) Quaoar registered between 2018 and 2025. By performing a joint analysis of this occultat…

astro-ph.EP2025★ 14 cited

The rings of (2060) Chiron: Evidence of an evolving system

C. L. Pereira, F. Braga-Ribas, B. Sicardy +54

The centaur (2060) Chiron has long been a candidate for hosting material in orbit, based on occultation and photometric and spectroscopic data. Here, we present a multichord stella…

astro-ph.EP2025

The resilience of the sailboat stable region

Rafael Sfair, Tiago F. L. L. Pinheiro, Giovana Ramon +1

Binary systems host complex orbital dynamics where test particles can occupy stable regions despite strong gravitational perturbations. The sailboat region, discovered in the Pluto…

astro-ph.EP2025★ 1 cited

Stellar occultation observations of (38628) Huya and its satellite: a detailed look into the system

F. L. Rommel, E. Fernández-Valenzuela, B. C. N. Proudfoot +78

The physical and orbital parameters of Trans-Neptunian Objects (TNOs) provide valuable information about the Solar System's formation and evolution. In particular, the characteriza…

astro-ph.EP2024★ 5 cited

Machine learning approach for mapping the stable orbits around planets

Tiago F. L. L. Pinheiro, Rafael Sfair, Giovana Ramon

Numerical N-body simulations are commonly used to explore stability regions around exoplanets, offering insights into the possible existence of satellites and ring systems. This st…

astro-ph.EP2021

Constraining the nature of the possible extrasolar PDS110b ring system

Tiago F. L. L. Pinheiro, Rafael Sfair

The young star PDS110 in the Ori OB1a association underwent two similar eclipses in 2008 and 2011, each of which lasted for a period of at least 25 days. One plausible explanation…