Grupo de pesquisas em ocultações estelares e caracterização física de objetos do Sistema Solar

Artigos

2026

• An Irregular Shape of the Jupiter Trojan (3317) Paris Revealed by Stellar Occultations and Rotational Light Curves Luan M. Catani; Bruno E. Morgado, Eros Gradovski, Pablo Santos-Sanz, Bruno Sicardy, et al. The Astronomical Journal DOI: 10.3847/1538-3881/ae88f3
• Rigorous Use of Light-curve Inversion and Stellar Occultation Techniques for Deriving a Scaled Three-dimensional Shape for the Jupiter Trojan (911) Agamemnon Eros de O. Gradovski; Felipe Braga-Ribas, Altair R. Gomes-Junior, Bruno Sicardy, Jose-Luis Ortiz, et al. The Astrophysical Journal DOI: 10.3847/1538-4357/ae8b97
• Evidence of a New Arc or a Belt of Small Satellites around (50000) Quaoar Felipe Braga-Ribas; Chrystian L. Pereira, Bruno Sicardy, Bruno E. Morgado, Jose-Luis Ortiz, Gustavo Madeira, and Giuliano Margoti. The Astrophysical Journal Letters DOI: 10.3847/2041-8213/ae4751
• The rings of (2060) Chiron: Evidence of an evolving system C. L. Pereira; F. Braga-Ribas, B. Sicardy, R. Leiva, M. Assafin, et al. The Astrophysical Journal Letters DOI: 10.3847/2041-8213/ae0b6d

2025

• Investigating the formation of small Solar System objects using stellar occultations by satellites: present, future and its use to update satellite orbits F. Braga-Ribas; F. Vachier, J. Desmars, G. Margoti and B. Sicardy. Philosophical Transactions of the Royal Society A DOI: 10.1098/rsta.2024.0200
• Physical characteristics of Jupiter's Trojan (1437) Diomedes from a tri-chord stellar occultation in 2020 and dimensionless three-dimensional model H. Dutra; M. Assafin, B. Sicardy, J. L. Ortiz, A. R. Gomes-Júnior, et al. Philosophical Transactions of the Royal Society A DOI: 10.1098/rsta.2024.0187
• The Rings of (2060) Chiron: Evidence of an Evolving System C. L. Pereira; F. Braga-Ribas, B. Sicardy, R. Leiva, M. Assafin, et al. The Astrophysical Journal Letters DOI: 10.3847/2041-8213/ae0b6d

2024

2023

• A dense ring of the trans-Neptunian object Quaoar outside its Roche limit B. E. Morgado; B. Sicardy, F. Braga-Ribas, J. L. Ortiz, H. Salo, et al. Nature DOI: 10.1038/s41586-022-05629-6
• Constraints on (2060) Chiron’s size, shape, and surrounding material from the November 2018 and September 2019 stellar occultations F. Braga-Ribas; C. L. Pereira, B. Sicardy, J. L. Ortiz, J. Desmars, et al. Astronomy & Astrophysics DOI: 10.1051/0004-6361/202346749
• Kilometer-precise (UII) Umbriel physical properties from the multichord stellar occultation on 2020 September 21 M. Assafin; S. Santos-Filho, B. E. Morgado, A. R. Gomes-Júnior, B. Sicardy, et al. Monthly Notices of the Royal Astronomical Society DOI: 10.1093/mnras/stad3093

Teses

Dissertações

Colaboradores

2026

• Constraining the size, shape, and albedo of the large trans-Neptunian object (28978) Ixion with multi-chord stellar occultations Y. Kilic; F. Braga-Ribas, C. L. Pereira, J. L. Ortiz, B. Sicardy, et al. Astronomy & Astrophysics DOI: 10.1051/0004-6361/202557970