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- W2091450132 abstract "The energetics and dynamics of contact binary asteroids as they approach and pass the rotational fission limit is studied. We presume that the asteroids are subject to an external torque, such as from the YORP effect, that increases their angular momentum. Furthermore, we assume the asteroids can be described by a fairly minimal model comprised of a sphere and ellipsoid resting on each other. The minimum energy configurations for contact binary asteroids at different levels of angular momentum are computed and discussed. We find distinct transitions between different configurations as the angular momentum of the system is increased. These indicate that rapidly rotating contact binary asteroids may seek out clearly different relative configurations than slowly rotating systems. We find a single end state of the systems prior to rotational fission, and distinct dynamical outcomes as a function of mass distribution and shape when the rotational fission limit is exceeded. Our theoretical results agree qualitatively with observed properties of near-Earth asteroids, and can be used to help explain the spin-rate barrier, contact binaries, and the observed morphology of most NEO binaries." @default.
- W2091450132 created "2016-06-24" @default.
- W2091450132 creator A5053565736 @default.
- W2091450132 date "2007-08-01" @default.
- W2091450132 modified "2023-10-16" @default.
- W2091450132 title "Rotational fission of contact binary asteroids" @default.
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- W2091450132 doi "https://doi.org/10.1016/j.icarus.2007.02.015" @default.
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