The influence of reactive torques on comet nucleus rotation

Details The influence of reactive torques on comet nucleus rotation The influence of reactive torques on comet nucleus rotation

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.500..601n&link_type=abstract

In: Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed

Physics

Cometary Nuclei: Rotation

Scientific paper

In the classical comet nucleus model suggested b F. Whipple (1951), anisotropic ice sublimation due to solar radiation produces reactive torques that act on the nucleus. This should result in the slow variation of a nucleus' rotation state. In earlier papers the spin evolution of a few comet nuclei was investigated using numerical integration of the equations of nucleus rotation. We seek to develop a more systematic approach to the problem by studying the rotational evolution of a cometary nucleus using the averaging method. This approch allows us to extract the relevant physical parameters that control the evolution of a comet's rotation state. As an example we discuss some possible scenarios of rotational evolution for the nucleus of Borrelly comet.

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