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7 papers · 2 filters
Increase in cratering efficiency with target curvature in strength-controlled craters
Ayako I. Suzuki, Chisato Okamoto, Kosuke Kurosawa +3
Impact-cratering processes on small bodies are thought to be mainly controlled by the local material strength because of their low surface gravity, and craters that are as large as…
Centrifugal Experiments with Simulated Regolith:Effects of Gravity, Size Distribution, and Particle Shape on Porosity
Tomomi Omura, masato Kiuchi, Carsten Güttler +1
Porosity is a key characteristic of the regolith on the surface of small bodies. The porosity of the regolith on the surface of asteroids is changed by applied pressure, and the re…
Follow-up observations for the Asteroid Catalog using AKARI Spectroscopic Observations
Sunao Hasegawa, Daisuke Kuroda, Kenshi Yanagisawa +1
In the 1-2.5 micron range, spectroscopic observations are made on the AcuA-spec asteroids, whose spectra were obtained in a continuous covered mode between 2.5-5.0 micron by AKARI.…
Impact cratering on porous targets in the strength regime
Akiko M. Nakamura
Cratering on small bodies is crucial for the collision cascade and also contributes to the ejection of dust particles into interplanetary space. A crater cavity forms against the m…
Polarimetric Study of Near-Earth Asteroid (1566) Icarus
Masateru Ishiguro, Daisuke Kuroda, Makoto Watanabe +13
We conducted a polarimetric observation of the fast-rotating near-Earth asteroid (1566) Icarus at large phase (Sun-asteroid-observer's) angles = 57 deg--141deg around the 2015 s…
Experimental study on compression property of regolith analogues
Tomomi Omura, Akiko M. Nakamura
The compression property of regolith reflects the strength and porosity of the regolith layer on small bodies and their variations in the layer that largely influence the collision…