Search Results - "Morgado, B. E"
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The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation
Published in Nature (London) (12-10-2017)“…Observations of a stellar occultation of Haumea, one of the four known trans-Neptunian dwarf planets, constrain its size, shape and density, and reveal a ring…”
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Dynamical characterization of the 6/1 mean motion resonance between Quaoar’s ring and Weywot
Published in Monthly notices of the Royal Astronomical Society (01-09-2023)“…ABSTRACT Recently, it has been reported the discovery of a dense ring around the trans-Neptunian object 50000 Quaoar. The ring particles seem to be very close…”
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SORA: Stellar occultation reduction and analysis
Published in Monthly notices of the Royal Astronomical Society (04-02-2022)“…ABSTRACT The stellar occultation technique provides competitive accuracy in determining the sizes, shapes, astrometry, etc., of the occulting body, comparable…”
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Occultation portal: A web-based platform for data collection and analysis of stellar occultations
Published in Monthly notices of the Royal Astronomical Society (22-07-2022)“…ABSTRACT Recording a stellar occultation is one powerful method that gives direct information about the physical properties of the occulting Solar system…”
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The 2021 mutual phenomena involving the Galilean satellites of Jupiter and the inner satellite Thebe
Published in Monthly notices of the Royal Astronomical Society (20-10-2023)“…ABSTRACT Astrometric studies and orbital modelling of planetary moons have contributed significantly to advancing our understanding of their orbital dynamics…”
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Mutual approximations between the five main moons of Uranus
Published in Monthly notices of the Royal Astronomical Society (11-12-2019)“…ABSTRACT Doing high-precision astrometry on Uranus’ moons is currently quite challenging. No probes will orbit the system before 2040. New high-precision…”
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Milliarcsecond Astrometry for the Galilean Moons Using Stellar Occultations
Published in The Astronomical journal (01-05-2022)“…Abstract A stellar occultation occurs when a Solar System object passes in front of a star for an observer. This technique allows the sizes and shapes of the…”
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Physical properties of Centaur (60558) 174P/Echeclus from stellar occultations
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT The Centaur (60558) Echeclus was discovered on 2000 March 03, orbiting between the orbits of Jupiter and Uranus. After exhibiting frequent outbursts,…”
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Author Correction: A dense ring of the trans-Neptunian object Quaoar outside its Roche limit
Published in Nature (London) (01-02-2024)Get full text
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Kilometer-precise (UII) Umbriel physical properties from the multichord stellar occultation on 2020 September 21
Published in Monthly notices of the Royal Astronomical Society (20-10-2023)“…ABSTRACT We report the results of the stellar occultation by (UII) Umbriel on 2020 September 21. The shadow crossed the USA and Canada, and 19 positive chords…”
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New orbits of irregular satellites designed for the predictions of stellar occultations up to 2020, based on thousands of new observations
Published in Monthly notices of the Royal Astronomical Society (21-10-2016)“…Gomes-Júnior et al. published 3613 positions for the eight largest irregular satellites of Jupiter and 1787 positions for the largest irregular satellite of…”
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The PHEMU15 catalogue and astrometric results of the Jupiter's Galilean satellite mutual occultation and eclipse observations made in 2014–2015
Published in Monthly notices of the Royal Astronomical Society (01-03-2018)“…Abstract During the 2014–2015 mutual events season, the Institut de Mécanique Céleste et de Calcul des Éphémérides (IMCCE), Paris, France, and the Sternberg…”
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The first observed stellar occultations by the irregular satellite Phoebe (Saturn IX) and improved rotational period
Published in Monthly notices of the Royal Astronomical Society (01-02-2020)“…ABSTRACT We report six stellar occultations by Phoebe (Saturn IX), an irregular satellite of Saturn, obtained between mid-2017 and mid-2019. The 2017 July 6…”
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14
The 2021 mutual phenomena involving the Galilean satellites of Jupiter and the inner satellite Thebe
Published 01-10-2023“…Astrometric studies and orbital modeling of planetary moons have contributed significantly to advancing our understanding of their orbital dynamics. These…”
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15
Kilometer-precise (UII) Umbriel physical properties from the multichord stellar occultation on 2020 September 21
Published 17-10-2023“…We report the results of the stellar occultation by (UII) Umbriel on September 21st, 2020. The shadow crossed the USA and Canada, and 19 positive chords were…”
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The changing material around (2060) Chiron from an occultation on 2022 December 15
Published 07-08-2023“…A&A 676, L12 (2023) We could accurately predict the shadow path and successfully observe an occultation of a bright star by Chiron on 2022 December 15. The…”
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Occultation Portal: a web-based platform for data collection and analysis of stellar occultations
Published 20-06-2022“…Recording a stellar occultation is one powerful method that gives direct information about the physical properties of the occulting solar system object. In…”
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SORA: Stellar Occultation Reduction and Analysis
Published 05-01-2022“…The stellar occultation technique provides competitive accuracy in determining the sizes, shapes, astrometry, etc., of the occulting body, comparable to…”
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19
The two rings of (50000) Quaoar
Published 20-04-2023“…A&A 673, L4 (2023) Quaoar is a classical Trans-Neptunian Object (TNO) with an area equivalent diameter of 1,100 km and an orbital semi-major axis of 43.3…”
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Milliarcsecond astrometry for the Galilean moons using stellar occultations
Published 22-03-2022“…The Astronomical Journal, Volume 163, Number 5, 2022 A stellar occultation occurs when a Solar System object passes in front of a star for an observer. This…”
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