Sibling sandblasting and the smoothness of Gaspra and Ida

Details Sibling sandblasting and the smoothness of Gaspra and Ida Sibling sandblasting and the smoothness of Gaspra and Ida

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998p%26ss...46..929h&link_type=abstract

Planetary and Space Science, Volume 46, Issue 8, p. 929-935.

Physics

2

Scientific paper

Both Asteroid 951 Gaspra and 243 Ida look like smooth, rounded pebbles and neither have the expected angular, jagged-faceted appearance of a rock fragment produced by a hypervelocity impact. We suggest that they were both rough and sharp-edged at birth and that the rounding off that we now see is the result of a multitude of low-velocity collisions (at around 0.065 to 0.1 km s-1) with the much smaller sibling asteroidal fragments that were born at the same time by the collisions that produced the respective asteroidal families.

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