Results 1 to 10 of about 1,644 (162)
Transmission of a Seismic Wave Generated by Impacts on Granular Asteroids
The Planetary Science Journal, 2022 Abstract In this paper, we use a soft-sphere discrete element method code to simulate the transmission and study the attenuation of a seismic wave. Then, we apply our findings to the different space missions that have had to touch the surface of different small bodies in the solar system.
Paul Sánchez +2 more
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Unbiased orbit determination for the next generation asteroid/comet surveys [PDF]
Proceedings of the International Astronomical Union, 2005 In the next generation surveys, the discovery of moving objects can be successful only if an observation strategy and the identication/orbit determination procedure are appropriate for the diverse apparent motions of the target sub-populations. The observations must accurately measure the displacement over a short interval of time; observations ...
MILANI COMPARETTI, ANDREA +9 more
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Tsunami generation and propagation from the Mjølnir asteroid impact [PDF]
Meteoritics & Planetary Science, 2007 Abstract— In the late Jurassic period, about 142 million years ago, an asteroid hit the shallow paleo‐Barents Sea, north of present‐day Norway. The geological structure resulting from the impact is today known as the Mjølnir crater. The present work attempts to model the generation and the propagation of the tsunami from the Mjølnir impact.
S. Glimsdal +4 more
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ADAM: a general method for using various data types in asteroid reconstruction [PDF]
Astronomy & Astrophysics, 2015 11 pages, submitted to A& ...
Viikinkoski, Matti +2 more
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Asteroid-Generated Tsunamis: A Review
, 2022 AbstractWe study ocean waves caused by an asteroid airburst located over the ocean. The concern is that the waves would damage distant coastal cities. Simple qualitative analysis suggests that the wave energy is proportional to the ocean depth and the strength and speed of the blast.
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Large main-belt asteroids are generally not Maclaurin or Jacobi ellipsoids
Astronomy & Astrophysics, 2023 Aims.A recent major high-angular-resolution imaging survey of 42 large main-belt asteroids (D > 100 km) with VLT/SPHERE has provided shape models of these bodies with an unprecedented accuracy. We ask whether the shapes of these bodies correspond to Maclaurin or Jacobi hydrostatic equilibrium figures.Methods.To address this question, we compared the
Chambat, Frédéric +2 more
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Hybrid simulations of solar wind interaction with magnetized asteroids: General characteristics [PDF]
Journal of Geophysical Research: Space Physics, 2002 Using electromagnetic hybrid (kinetic ions, fluid electrons) simulations, the interaction between solar wind and a magnetized asteroid is investigated. At no or very low levels of asteroid magnetization the solar wind remains undisturbed. As the level of magnetization is increased, a phase standing whistler wake is generated which owing to its ...
N. Omidi +4 more
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The Fast Generation of the Reachable Domain for Collision-Free Asteroid Landing
Mathematics, 2022 For the mission requirement of collision-free asteroid landing with a given time of flight (TOF), a fast generation method of landing reachable domain based on section and expansion is proposed. First, to overcome the difficulties of trajectory optimization caused by anti-collision path constraints, a two-stage collision-free trajectory optimization ...
Yingjie Zhao, Hongwei Yang, Jincheng Hu
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A case of atypical nocardia asteroides sclerouveitis resistant to fourth-generation fluoroquinolones [PDF]
Revista Brasileira de Oftalmologia, 2016 ABSTRACT We describe an unusual case of Nocardia spp scleritis in a health girl resistant to topical fourth-generation fluoroquinolones. Clinically, there was only partial response of the scleritis to initial therapy. Treatment was changed to meropenem intravenously and topical amikacin.
Túlio Frade Reis +4 more
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The direction of core soldification in asteroids: implications for dynamo generation.
IcarusPaleomagnetic studies of meteorites over the past two decades have revealed that the cores of multiple meteorite parent bodies, including those of certain chondritic groups, generated dynamo fields as they crystallised. However, uncertainties in the direction and mode of core solidification in asteroid-sized bodies have meant using the timings and ...
Dodds, KH +3 more
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