Results 121 to 130 of about 1,091 (163)
On the dynamics OF NON-RIGID asteroid rotation [PDF]
Acta Astronautica, 2019 We have presented in this communication a new solving procedure for the dynamics of non-rigid asteroid rotation, considering the final spin state of rotation for a small celestial body (asteroid). The last condition means the ultimate absence of the applied external torques (including short-term effect from torques during collisions, long-term YORP ...
Sergey V Ershkov, Dmytro Leshchenko
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Nonlinearity in Inverse Problems of Asteroid Dynamics
Solar System Research, 2021A collision of an asteroid with the Earth in the future is always considered as a probabilistic event because the asteroid orbit determined from observations with random errors inevitably contains an uncertainty in its parameters. To establish the probability of collision, the parametric uncertainty as a probabilistic distribution of virtual objects is
Avdyushev, V. A. +2 more
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Asteroid Proper Elements and the Dynamical Structure of the Asteroid Main Belt
Icarus, 1994Abstract We have computed proper elements for 12,573 asteroids, including all the ones with orbits accurate enough to be useful for family identification. This was done with an upgraded version of our iterative analytical algorithm, resulting in significantly improved accuracy for most asteroids in the low to moderate inclination and eccentricity ...
MILANI COMPARETTI, ANDREA +1 more
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Chaotic transitions in resonant asteroidal dynamics
CELESTIAL MECHANICS AND DYNAMICAL ASTRONOMY, 1996The utilization of chaotic dynamics approaches allowed the identification of many modes of motion in resonant asteroidal dynamics. As these dynamical systems are not integrable, the motion modes are not separated and one orbit may transit from one mode to another. In some cases, as in the 3/1 resonance, these transitions may lead, in a relatively short
Ferraz-Mello, S. +3 more
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Dynamical Relation of Meteorids to Comets and Asteroids
Earth, Moon, and Planets, 2004We tested four criteria used for discrimination between asteroidal and cometary type of orbits: Whipple criterion K, Kresak criterion Pe, Tisserand invariant T and aphelion distance Q. To estimate their reliability, all criteria were applied to classify the 2225 orbits of NEAs and 582 orbits of comets, for several epochs spanning the time interval of ...
S. Starczewski, T. J. Jopek
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2010
Asteroid dynamical families are extremely important for our understanding of the origin, evolution, and general physical properties of the asteroid population. First identified on the basis of their dynamical properties, families have been soon recognized as the products of well-defined physical processes, namely the disruption of single parent bodies ...
A. Cellino, A. dell’Oro
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Asteroid dynamical families are extremely important for our understanding of the origin, evolution, and general physical properties of the asteroid population. First identified on the basis of their dynamical properties, families have been soon recognized as the products of well-defined physical processes, namely the disruption of single parent bodies ...
A. Cellino, A. dell’Oro
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Advances in Space Research, 1985
Abstract It is a major goal of research in the field of asteroidal dynamics to relate the distribution of orbital elements to the evolutionary history of the asteroidal belt. The distribution of orbital elements shows characteristics which are presumably of cosmogonic significance.
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Abstract It is a major goal of research in the field of asteroidal dynamics to relate the distribution of orbital elements to the evolutionary history of the asteroidal belt. The distribution of orbital elements shows characteristics which are presumably of cosmogonic significance.
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1982
The main features of asteroidal dynamics are demonstrated in Figures 1–4 which show the frequency distributions for perihelion distances, aphelion distances, simimajor axes and inclinations of the numbered asteroids. The large majority of the known asteroids is situated in a belt between the orbits of Mars and Jupiter.
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The main features of asteroidal dynamics are demonstrated in Figures 1–4 which show the frequency distributions for perihelion distances, aphelion distances, simimajor axes and inclinations of the numbered asteroids. The large majority of the known asteroids is situated in a belt between the orbits of Mars and Jupiter.
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Asteroid-Asteroid Interactions - Dynamically Irrelevant?
1991Structural investigations of the distribution of the asteroids have so far concentrated on the interactions with the major planets, especially Jupiter, and the resulting effects in element space. Here some less known structures of their distribution in actual space are shown: the radial number density and the orthogonal orbit density.
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Dynamical evolution of the Hungaria asteroids
Icarus, 2010The Hungarias are a stable asteroid group orbiting between Mars and the main asteroid belt, with high inclinations (16–30), low eccentricities (e < 0.18), and a narrow range of semi-major axes (1.78– 2.06 AU). In order to explore the significance of thermally-induced Yarkovsky drift on the population, we conducted three orbital simulations of a 1000 ...
Firth M. McEachern +2 more
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