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Asteroidal agglutinate formation and implications for asteroidal surfaces
Icarus, 1981The possible role of spallation on the free surfaces of target bodies in asteroid surface evolution in the presence of colliding bodies is considered. The ease of impact melt formation is discussed based on the results of shock recovery experiments, and a difference between collisions with dense, nonporous targets and with porous, particulate powders ...
Friedrich Hörz, Rand B. Schaal
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Asteroids: Surface Composition from Reflection Spectroscopy
Science, 1974Minerals partly composing the surfaces of 14 asteroids are determined by using asteroid reflectance spectra and optical properties of meteorites and other materials. Individual electronic absorption features are identified in the asteroids' spectra. The energies, relative strengths, and shapes of these features are interpreted by using laboratory and ...
T B, McCord, M J, Gaffey
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Asteroid control through surface restructuring
Acta Astronautica, 2021Abstract A novel concept for asteroid orbit control by restructuring asteroid surfaces to manipulate albedo and respective radiation pressure effects is introduced. The method itself is propellant-less allowing for prolonged operation and permitting the adaption and even reversing reflection changes.
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SinGAN-Based Asteroid Surface Image Generation
Journal of Database Management, 2021While it is risky considering spacecraft constraints and unknown environment on asteroid, surface sampling is an important technique for asteroid exploration. One of the sample return missions is to seek an optimal landing site, which may be in hazardous terrain.
Yundong Guo +7 more
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Optical maturation of asteroid surfaces
Icarus, 2013Abstract Analysis of laboratory experiments simulating space weathering optical effects on atmosphereless planetary bodies reveals that the time needed to alter the spectrum of an ordinary chondrite meteorite to resemble the overall spectral shape and slope of an S-type asteroid is about ∼10 5 yr.
D.I. Shestopalov +2 more
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Near-Earth Asteroids: Surface Structure and Shapes
Earth, Moon, and Planets, 1996The available data characterizing surface properties of near-Earth objects have been analyzed and compared with the data of large main belt asteroids. There are no evidences of the existence of solid rock surfaces among near-Earth objects.
I. N. Belskaya +2 more
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The surface properties of asteroids
Advances in Space Research, 2004Abstract The physical characteristics of asteroid surfaces are best defined by direct measurements, few of which currently exist. Thus, inferences from indirect observations must be made. From the limited visible and radar imagery heavy cratering marks the asteroid surfaces and the surfaces are rough at all scales.
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SPACE WEATHERING OF ASTEROID SURFACES
Annual Review of Earth and Planetary Sciences, 2004▪ Abstract Visible and near-infrared spectra of reflected sunlight from asteroid surfaces exhibit features that hold the promise for identifying surface mineralogy. However, the very surfaces that are observed by remote-sensing are also subject to impingement by micrometeoroids and solar wind particles, which are believed to play the dominant role in ...
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Contact Motion on Surface of Asteroid
Journal of Spacecraft and Rockets, 2014A comprehensive method for modeling the motion of a spherical pod at the surface of an asteroid is presented. Using triangular faceted surfaces, the largest features of the asteroid (global shape, monoliths, and large boulders) are modeled. The presence of smaller rocks is accounted for using a stochastic model of rock generation and collision.
Simon Tardivel +4 more
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