Combined effect of YORP and collisions on the rotation rate of small Main Belt asteroids

Details Combined effect of YORP and collisions on the rotation rate of small Main Belt asteroids Combined effect of YORP and collisions on the rotation rate of small Main Belt asteroids

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011icar..214..622m&link_type=abstract

Icarus, Volume 214, Issue 2, p. 622-631.

Physics

2

Scientific paper

In this study we model the evolution of the rotation rate of small Main Belt asteroids under the effects of YORP and collisions. We find that cratering collisions coupled to YORP give non-linear effects which depend on the size of the bodies. These effects are relevant at slow rotation rates and lead to the observed excess of slow rotators among small asteroids. We show that the rotational fission of small asteroids is very frequent and explain objects like P/2010 A2 and its tail.

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