RSS 1.0Departamento de Matemática
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Spin pairs in the Koronis asteroid family
Carruba, V.
; ; ; Barletta, W. ; Lucchini, A. ; Martins, B. ; Furlaneto, P. (Planetary and Space Science, 2020) [Artigo]
Asteroid groups may either form because of collisions or the rotational failure of a parent body. Collisional asteroid families tend to be more spread in proper element domains, while young spin clusters are usually much ... -
Machine learning classification of new asteroid families members
Carruba, V.; ; Domingos, R. C. ; Lucchini, A. ; Furlaneto, P. (Monthly Notices of the Royal Astronomical Society, 2020) [Artigo]
Asteroid families are groups of asteroids that are the product of collisions or of the rotational fission of a parent object. These groups are mainly identified in proper elements or frequencies domains. Because of robotic ... -
An unaccounted component on the Prometheus and Pandora offset angular positions
Santana, Thamiris; Winter, Othon C. ; Mourão, Daniela C. (European Physical Journal: Special Topics, 2020) [Artigo]
Near the turning of this millennium (1996–2004) it was detected that Prometheus and Pandora were not in their angular positions as predicted from their discoveries by the Voyager spacecrafts (1980). This is known as the ... -
Celestial Mechanics in the XXIst century – challenges
Gomes, Vivian M.; ; ; ; Winter, Othon C. (European Physical Journal: Special Topics, 2020) [Editorial]
This special issue of the European Journal of Physics: Special Topics entitled Celestial Mechanics in the XXIst Century published a set of 15 papers aiming to put in perspective the main problems that are being addressed ... -
Effects of the rotation of a spacecraft in an atmospheric close approach with the Earth
; Gomes, Vivian Martins; ; (European Physical Journal: Special Topics, 2020) [Artigo]
A maneuver called “Aerogravity Assisted” is known in the literature to increase the energy gains given by a close approach between a spacecraft and a planet using the atmosphere of the planet. Several previous papers showed ... -
On the rotational motion of NEAs during close encounters with the Earth
Boldrin, Luiz A. G.; ; Winter, Othon C. (European Physical Journal: Special Topics, 2020) [Artigo]
During their lifetime, the Near-Earth Asteroids (NEAs) suffer numerous close encounters (CE) with Earth, Mars and Venus. It has been demonstrated that gravitational interactions during close planetary encounters can alter ... -
Earth-size planet formation in the habitable zone of circumbinary stars
Barbosa, G. O.; Winter, O. C. ; Amarante, A. ; Izidoro, A. ; Domingos, R. C. ; (Monthly Notices of the Royal Astronomical Society, 2020) [Artigo]
This work investigates the possibility of close binary (CB) star systems having Earth-size planets within their habitable zones (HZs). First, we selected all known CB systems with confirmed planets (totaling 22 systems) ... -
Asteroid triple-system 2001 SN263: Surface characteristics and dynamical environment
Winter, O. C.; Valvano, G. ; Moura, T. S. ; ; ; Sfair, R. (Monthly Notices of the Royal Astronomical Society, 2020) [Artigo]
The (153591) 2001 SN263 asteroid system, a target of the first Brazilian interplanetary space mission, is one of the known three triple systems within the population of near-Earth asteroids. One of the mission objectives ... -
Removing energy from a spacecraft using tethers
Ferreira, Alessandra F.S.; Moraes, Rodolpho V. ; ; Winter, Othon C. (Proceedings of the International Astronautical Congress, IAC, 2019) [Trabalho apresentado em evento]
For a mission whose focus is the capture of the spacecraft by the main body or a close approach for observation, removing energy from a spacecraft can be an important maneuver. An option is the Tethered Slingshot Maneuver ... -
PsYCHE Mission: Dynamics on and nearby the target
Winter, Othon C.; Moura, Tamires ; ; Valvano, Giulia ; Sfair, Rafael ; (Proceedings of the International Astronautical Congress, IAC, 2019) [Trabalho apresentado em evento]
Radar observations show that (16) Psyche is one of the largest and most massive asteroids of the M-class located in the main belt, with a diameter of approximately 230 km. This fact makes Psyche a unique object, since ... -
Dynamical evidence for an early giant planet instability
Ribeiro, Rafael de Sousa; ; ; Izidoro, Andre ; ; Vieira Neto, Ernesto (Icarus, 2020) [Artigo]
The dynamical structure of the Solar System can be explained by a period of orbital instability experienced by the giant planets. While a late instability was originally proposed to explain the Late Heavy Bombardment, ... -
The Zelima asteroid family: Resonant configuration and rotational fission clusters
Carruba, V.; Ribeiro, J. V. (Planetary and Space Science, 2020) [Artigo]
Asteroid families are groups of asteroids that are identifiable in domains of proper elements. They may be the outcome of a collision, or the product of rotational fission. Among collisional families, young asteroid families ... -
Effects of the mass parameter in the optimum direction of impulse and energy variation in a Powered Swing-By
Ferreira, A. F.S.; Moraes, R. V. ; ; Winter, O. C. (Journal of Physics: Conference Series, 2019) [Trabalho apresentado em evento]
The energy of a spacecraft, relative to the primary body of the system, before and after a Powered Swing-By maneuver with an impulse applied during the close encounter with the secondary body is studied. The Powered Swing-By ... -
XIX Brazilian Colloquium on Orbital Dynamics (2018): A solid path to the 21st century
; ; ; Winter, O. C. (Journal of Physics: Conference Series, 2019) [Trabalho apresentado em evento]
The Brazilian Colloquium on Orbital Dynamics (CBDO) is a scientific meeting that takes place every two years since 1982. Its main goal is to bring together researchers, professors, undergraduate and post graduate students ... -
The population of rotational fission clusters inside asteroid collisional families
Carruba, V.; ; Barletta, W. ; ; ; Martins, B. (Nature Astronomy, 2020) [Artigo]
Asteroid families are groups of objects sharing similar orbits. They are mostly the results of past collisions between two asteroids. Recent studies have shown that some asteroid families can also be the outcome of the ... -
Errors of powered swing-by in the restricted three-body problem
Ferreira, Alessandra F.S.; Moraes, Rodolpho V. ; ; Winter, Othon C. (Journal of Guidance, Control, and Dynamics, 2019) [Artigo]
The powered swing-by maneuver is described by the parameters that define the orbit of the spacecraft and the ones that define the impulse applied. In this case the impulse is applied in the periapsis of the orbit around ... -
Location and stability of distant retrograde orbits around the Moon
; Winter, O. C. (Monthly Notices Of The Royal Astronomical Society, 2020) [Artigo]
Recently has grown the interest of placing natural or artificial objects in the neighbourhood of the Moon. We numerically investigate a region of retrograde orbits around the Moon associated with the C Family of periodic ... -
Spin clusters inside four young asteroid groups
Carruba, V; Ramos, L. G. M. ; (Monthly Notices Of The Royal Astronomical Society, 2020) [Artigo]
Asteroid groups may either form because of collisions or because of spin induced fission. Recently it has been shown that young spin clusters tend to form more frequently in young collisional families than in older groups. ... -
Dynamical environment and surface characteristics of asteroid (16) Psyche
Moura, T. S.; Winter, O. C. ; ; Sfair, R. ; ; Valvano, G. (Monthly Notices Of The Royal Astronomical Society, 2020) [Artigo]
Radar observations show that (16) Psyche is one of the largest and most massive asteroids of the M-class located in the main belt, with a diameter of approximately 230 km. This fact makes Psyche a unique object since ... -
Preliminary Results in Dynamical Simulations of Water Origins for Earth-Like Planets
; Winter, O. C.; ; ; ; ; (Bioastronomy 2007: Molecules, Microbes, And Extraterrestrial Life, 2009) [Trabalho apresentado em evento]
In its gaseous and solid forms, water is present in the most distant galaxies, among the stars, in the Sun, in its planets and their satellites and ring systems, and in comets. In its liquid form, it has played an essential ...