Grazing impacts on Mars: a record of lost satellites.

Details Grazing impacts on Mars: a record of lost satellites. Grazing impacts on Mars: a record of lost satellites.

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87...84s&link_type=abstract

Journal of Geophysical Research, Vol. 87, Suppl., p. A84 - A96

Physics

28

Impact Phenomena:Mars, Mars:Impact Phenomena

Scientific paper

Grazing impacts can be identified on the basis of the elongate shape of the resulting crater and a distinctive pattern of ejecta deposits. Over 170 such impact craters larger than 3 km are recognized on Mars, and they represent more than 5% of the total crater population of the ridged plains. Many Mars grazers appear to occur along great circles. The most recent examples generally impacted in an east-west direction, whereas older grazers impacted in more northerly directions. The authors interpret the excessive number of grazers and the common impact directions as the result of satellites whose orbits tidally decayed with time.

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