Linear Features on Asteroid 951 Gaspra

Details Linear Features on Asteroid 951 Gaspra Linear Features on Asteroid 951 Gaspra

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996em%26p...74..131s&link_type=abstract

Earth, Moon and Planets, Volume 74, Issue 2, pp.131-149

Physics

1

Asteroid-Morphology

Scientific paper

Galileo images of asteroid 951 Gaspra reveal numerous linear ridges, crater chains and valleys. I describe? all visible linear features and assess their significance. A few crater chains may be chance alignments of impact craters, but most linear features are probably surface expressions of deep fractures caused by impact, perhaps exploiting systems of joints. Some features not previously recognised are documented, and one previously described structure, a ‘chevron’ form near the north pole, is shown to be an artifact. The global distribution suggests a monolithic interior. Two separate sets of grooves may have been formed by different impacts. One group of four or five parallel, wide but extremely subdued depressions may indicate the presence of a thicker or more mobile regolith accumulated on a sloping, rotational leading surface.

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