Results 81 to 90 of about 1,071 (195)
The Dynamics of the Trojan Asteroids [PDF]
Symposium - International Astronomical Union, 1994 The state of the art in the dynamics of the Trojan asteroids has progressed rapidly, since it has been possible to perform numerical integrations of many orbits for millions of years. Accurate proper elements are now computed by the synthetic method, that is from the output of a numerical integration; their stability, at least for time spans of a few ...
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Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.Abstract We apply a hybrid model (kinetic ions, fluid electrons) to provide context for MErcury Surface Space ENvironment, GEochemistry, and Ranging (MESSENGER) observations of Disappearing Dayside Magnetosphere (DDM) events at Mercury. Such events have been observed on four occasions and are caused by Coronal Mass Ejections completely removing the ...
Georg Glebe +2 more
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The Astrophysical Journal Supplement SeriesThe proper elements of asteroids are obtained from the instantaneous orbital elements by removing periodic oscillations produced by gravitational interactions with planets.
David Nesvorný +3 more
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Secular dynamics around uniformly rotating asteroids
Monthly Notices of the Royal Astronomical Society, 2019 The dynamical behaviours of spacecrafts moving around uniformly rotating asteroids are investigated in this work. Based on the generalized inertia integrals of asteroids, the expression of the disturbing potential is derived as a trigonometric series in terms of the mean anomaly, geographical longitude of ascending node and argument of pericentre.
Hanlun Lei +2 more
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Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.Abstract The flux of solar system meteoroids is dominated by objects less than 1 mm in diameter whose impact effects play a major role in the space weathering of airless body surfaces. These effects remain poorly characterized with respect to their dependence on the range of impact speeds for meteoroids across the inner solar system.
R. Christoffersen +8 more
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Fully Coherent Model of Dynamics around Binary Asteroids: Application to Didymos and the DART Impact
The Planetary Science JournalThe dynamical environment around binary asteroids has been studied in depth, but these models typically make assumptions about the eccentricity, shapes, or rotational stability of the asteroids.
Alex J. Meyer, Daniel J. Scheeres
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The dynamics about asteroid (162173) Ryugu
Celestial Mechanics and Dynamical AstronomyAbstractThe dynamical environment around the asteroid (162173) Ryugu is analyzed in detail using a constant-density polyhedron model based on the measurements from the Hayabusa2 mission. Six exterior equilibrium points (EPs) are identified along the ridge line of Ryugu, and their topological classifications fall into two distinctive categories.
Fu, Xiaoyu +4 more
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Life on Mars? The physiological perspective
Experimental Physiology, EarlyView.
Ronan M. G. Berg, Damian M. Bailey
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Encounter Circumstances of Asteroid 99942 Apophis with the Catalog of Known Asteroids
The Planetary Science JournalAsteroid 99942 Apophis will pass near Earth in 2029 April. Expected to miss our planet by a safe margin, that could change if Apophis's path were perturbed by a collision with another asteroid in the interim.
Paul Wiegert, Benjamin Hyatt
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Dimorphos’s Orbit Period Change and Attitude Perturbation due to Its Reshaping after the DART Impact
The Planetary Science JournalOn 2022 September 26 (UTC), NASA's Double Asteroid Redirection Test (DART) mission achieved a successful impact on Dimorphos, the secondary component of the near-Earth binary asteroid system (65803) Didymos. Subsequent ground-based observations suggest a
Ryota Nakano +19 more
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