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The main perturbing objects on the orbits of (616) Prometheus and (617) Pandora
Gomes-Júnior, A. R. [UNESP]; Santana, T. [UNESP]; Winter, O. C. [UNESP]; Sfair, R. [UNESP]Made available in DSpace on 2022-05-01T15:46:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-04-01; The dynamical evolution of the Prometheus and Pandora pair of satellites is chaotic, with a short 3.3 yr Lyapunov time. It is known that the anti-alignment of the apses line of Prometheus and Pandora, which occurs every 6.2 yr, is a critical configuration that amplifies their chaotic dynamical evolution...
Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objec...
Rommel, F. L.; Braga-Ribas, F.; Desmars, J.; Camargo, J. I.B.; Ortiz, J. L.; Sicardy, B.; Vieira-Martins, R.; Assafin, M.; Santos-Sanz, P.; Duffard, R.Made available in DSpace on 2021-06-25T11:08:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-01; Context. Trans-Neptunian objects (TNOs) and Centaurs are remnants of our planetary system formation, and their physical properties have invaluable information for evolutionary theories. Stellar occultation is a ground-based method for studying these distant small bodies and has presented exciting result...
A multi-chord stellar occultation by the large trans-Neptunian object (174567) ...
Souami, D.; Braga-Ribas, F.; Sicardy, B.; Morgado, B.; Ortiz, J. L.; Desmars, J.; Camargo, J. I.B.; Vachier, F.; Berthier, J.; Carry, B.Made available in DSpace on 2021-06-25T10:16:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-01; Context. We present results from the first recorded stellar occultation by the large trans-Neptunian object (174567) Varda that was observed on September 10, 2018. Varda belongs to the high-inclination dynamically excited population, and has a satellite, Ilmarë, which is half the size of Varda. Aims. We...
Mutual approximations between the five main moons of Uranus
Santos-Filho, S.; Assafin, M.; Morgado, B. E.; Vieira-Martins, R.; Camargo, J. I.B.; Gomes-Júnior, A. R. [UNESP]; Benedetti-Rossi, G.Made available in DSpace on 2020-12-12T01:15:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Laboratório Nacional de Biociências; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Idaho Beef Council; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Instituto Nacional de Ciência e Tecnologia da...
Database on detected stellar occultations by small outer Solar System objects
Braga-Ribas, F.; Crispim, A.; Vieira-Martins, R.; Sicardy, B.; Ortiz, J. L.; Assafin, M.; Camargo, J. I.B.; Desmars, J.; Lecacheux, J.; Santos-Sanz, P.Made available in DSpace on 2020-12-12T01:08:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-11-04; Observation of stellar occultation by objects of the Solar System is a powerful technique that allows measurements of size and shape of the small bodies with accuracies in the order of the kilometre. In addition, the occultation star probes the surroundings of the object, allowing the study of putative ...
APPROX – Mutual approximations between the Galilean moons: The 2016–2018 observ...
Morgado, B.; Vieira-Martins, R.; Assafin, M.; Machado, D. I.; Camargo, J. I.B.; Sfair, R. [UNESP]; Malacarne, M.; Braga-Ribas, F.; Robert, V.Made available in DSpace on 2019-10-06T17:01:51Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-02-01; Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); The technique of mutual approximations accurately gives the central instant of the maximum apparent approximation of two moving natural satellites in the plane of the...
First stellar occultation by the Galilean moon Europa and upcoming events betwe...
Morgado, B.; Benedetti-Rossi, G.; Gomes-Júnior, A. R. [UNESP]; Assafin, M.; Lainey, V.; Vieira-Martins, R.; Camargo, J. I.B.; Braga-Ribas, F.Made available in DSpace on 2019-10-06T17:14:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-06-01; Context. Bright stellar positions are now known with an uncertainty below 1 mas thanks to Gaia DR2. Between 2019-2020, the Galactic plane will be the background of Jupiter. The dense stellar background will lead to an increase in the number of occultations, while the Gaia DR2 catalogue will reduce the p...
The 2014–2015 Brazilian mutual phenomena campaign for the Jovian satellites and...
Morgado, B.; Vieira-Martins, R.; Assafin, M.; Dias-Oliveira, A.; Machado, D. I.; Camargo, J. I.B.; Malacarne, M.; Sfair, R. [UNESP]Made available in DSpace on 2019-10-06T17:20:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ); Progress in astrometry and orbital modelling of planetary moons in the last decade enabled better determinations of their orbits. These studies need accurate position...
Pluto's ephemeris from ground-based stellar occultations (1988-2016)
Desmars, J.; Meza, E.; Sicardy, B.; Assafin, M.; Camargo, J. I.B.; Braga-Ribas, F.; Benedetti-Rossi, G.; Dias-Oliveira, A.; Morgado, B.Made available in DSpace on 2019-10-06T15:54:14Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01; Context. From 1988 to 2016, several stellar occultations have been observed to characterise Pluto's atmosphere and its evolution. From each stellar occultation, an accurate astrometric position of Pluto at the observation epoch is derived. These positions mainly depend on the position of the occulted st...