Fig. 17

image

Mean number of reshaping collisions Nreshape expected for 67P-like objects as a function of time for different strengths, as indicated on the y axis. We note that the number of shape-changing collisions Nbil in the case of a generic bi-lobe shape with nominal strength properties is the same as Nreshape for YT = 1000 Pa (bottom). Time t = 0 corresponds to the beginning of the dynamical dispersal of the original trans-Neptunian disk of planetesimals, which generates the Scattered Disk; t = 4 × 109 yr is now.

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