Spin Excitation of Small Asteroids due to YORP Torque and Implications

Details Spin Excitation of Small Asteroids due to YORP Torque and Implications Spin Excitation of Small Asteroids due to YORP Torque and Implications

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.2707s&link_type=abstract

American Astronomical Society, DPS meeting #40, #27.07; Bulletin of the American Astronomical Society, Vol. 40, p.435

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The YORP torque acting on irregularly shaped small asteroids (< 1 km) due to thermal re-radiation is an important spin-altering mechanism (Rubincam 2001). This YORP torque could cause some (but not all) small asteroids to end up as rotationally excited objects. A robust assessment of the likelihood of rotational excitation can also be used to infer about the nature of the structural properties of small asteroids. I will discuss these and other related results.
We gratefully acknowledge the support from the NASA Outer Planets Research Program.
References:
Rubincam, D.P. 2001. Icarus 148, pp. 2-11.

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