Results 1 to 10 of about 6,184,520 (197)
Towards a general model of space weathering of S-complex asteroids and ordinary chondrites [PDF]
Astronomy & Astrophysics, 2007 Context. The effect of the space weathering on the spectral properties of the S-complex asteroids has been widely discussed in recent times, and a systematic reddening due to the exposure to the various influxes has been found. The evolution of spectral properties is also affected by other processes, such as close encounters with planetary bodies. Aims.
PAOLICCHI P +4 more
semanticscholar +6 more sources
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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Generating families of 3D periodic orbits about asteroids [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 The general three-dimensional periodic orbits around asteroids were investigated to study orbital behaviours in the vicinity of irregular gravitational bodies. The orbital patterns around periodic orbits were determined through decomposition into corresponding local manifolds.
Hexi Baoyin, Yang Yu
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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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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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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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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.
Henning Dypvik +8 more
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Generation of a measurable magnetic field in a metal asteroid with a rubble-pile core
Proceedings of the National Academy of Sciences, 2023 Paleomagnetic records of iron meteorites of the IVA group suggest that their parent body (an inward-solidified metal asteroid) possessed an internal magnetic field. The origin of this magnetism is enigmatic because inward solidification typically leads to light element release from the top of the liquid, which depresses convection and dynamo activity ...
Zhongtian Zhang, David Bercovici
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Detection of Earth-impacting asteroids with the next generation all-sky surveys [PDF]
Icarus, 2009 We have performed a simulation of a next generation sky survey's (Pan-STARRS 1) efficiency for detecting Earth-impacting asteroids. The steady-state sky-plane distribution of the impactors long before impact is concentrated towards small solar elongations (Chesley and Spahr, 2004) but we find that there is interesting and potentially exploitable ...
Robert Jedicke +7 more
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