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- W2064443301 abstract "The effect of density inhomogeneity on the YORP effect for a given shape model is investigated. A density inhomogeneity will cause an offset between the center of figure and the center of mass and a re-orientation of the principal axes away from those associated with the shape alone. Both of these effects can alter the predicted YORP rate of change in angular velocity and obliquity. We apply these corrections to the Itokawa shape model and find that its YORP angular velocity rate is sensitive to offsets between its center of mass and center of figure, with a shift on the order of 15 m being able to change the sign of the YORP effect for that asteroid. Given the non-detection of YORP for Itokawa as of 2008, this can shed light on the density distribution within that body. The theory supports a shift of the asteroid center of mass towards Itokawa's neck region, where there is an accumulation of finer gravels, or towards the asteroid's “Head” region. Detection of the YORP effect for Itokawa should provide some strong constraints on its density distribution. This theory could also be applied to asteroids visited by future spacecraft to constrain density inhomogeneities." @default.
- W2064443301 created "2016-06-24" @default.
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- W2064443301 date "2008-11-01" @default.
- W2064443301 modified "2023-10-11" @default.
- W2064443301 title "Effect of density inhomogeneity on YORP: The case of Itokawa" @default.
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- W2064443301 doi "https://doi.org/10.1016/j.icarus.2008.07.010" @default.
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