Results 211 to 220 of about 1,838 (234)

Surface Properties of Asteroids

1982
From spectrophotometry, polarimetry, IR-radiometry and UBV-photometry surface properties of asteroids are derived, such as:diameters, spectral reflectivity, albedo; based on observable parameters a classification into taxonomic types (Bowell et al.1978) is made and an interpretation in terms of the mineralogy of the surface and meteoritic analogs can ...
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Consequences of surface variegation of asteroids

Planetary and Space Science, 1994
Abstract Different surface layers on opposite sides of asteroids produce colour and albedo variations. Similarly a single-period variation with amplitude 0.013 mag deg−1 in the phase factor has recently been detected during the rotation of (51) Nemausa. Phase factor variation seems to be a general property of asteroids and explains part of the linear
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Surface Gravity Fields for Asteroids and Comets

Journal of Guidance, Control, and Dynamics, 2013
The characteristics of the interior gravity field are derived, summarized, and evaluated near the surface of an asteroid for the purpose of small body proximity operations. In order to characterize the gravity field of a body, the exterior gravity field is widely in use.
Yu Takahashi, D. J. Scheeres, Robert A. Werner   +2 more
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Modeling of migrating grains on asteroid’s surface

Astrophysics and Space Science, 2014
We present a numerical method based on the polyhedral data of asteroid shape for simulation of individual grain’s dynamics around the asteroid surface, with application to migration of regolith material on specific asteroid. Surface gravitational attraction and potential are computed using polyhedral method with a correction on possible singularities ...
Yang Yu, Hexi Baoyin
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The surface of asteroid 951 Gaspra

Earth, Moon, and Planets, 1996
I present new maps, photomosaics and geological interpretations of asteroid 951 Gaspra. Facets and limb concavities suggest a long history of large impacts producing 5 to 7 km diameter craters. Craters 1 to 4 km in diameter date the last facet-forming impact, though it is not clear which facet this formed.
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Development of autonomous rover for asteroid surface exploration

IEEE International Conference on Robotics and Automation, 2004. Proceedings. ICRA '04. 2004, 2004
Institute of Space and Astronautical Science (ISAS) in Japan has launched the engineering test spacecraft "HAYABUSA" on May 9, 2003 for the asteroid "ITOKAWA". HAYABUSA includes a very tiny rover named "MINERVA." MINERVA is the world-ever rover, which would move over an asteroid surface. The mission objectives of the rover are: (1) the establishment of
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Spacecraft to probe Moon, asteroid surfaces

Chemical & Engineering News Archive, 1994
Next week, if all goes as planned, a U.S. spacecraft will go into orbit around the Moon. Spacecraft Clementine will begin conducting an unusual dual military-scientific mission that is expected to set a number of "firsts" and to provide a wealth of data about the surface chemical composition and other features of the Moon and a near-Earth asteroid ...
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Investigating S-type asteroid surfaces through reflectance spectra of ordinary chondrites

Icarus, 2022
L Bonal, M Mahlke, B Carry
exaly  

Ejecta distribution and momentum transfer from oblique impacts on asteroid surfaces

Icarus, 2022
Sabina D Raducan, Thomas M Davison, Gareth S Collins   +2 more
exaly  

Surface Properties Of Asteroids

Science Trends, 2018
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