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Fig. 1


Trajectories of ring particles in a frame centred on the moonlet. Particles accumulate near the moonlet and fill its Roche lobe. Particles on trajectories labelled (a) are on circulating orbits. Particles on trajectories labelled (b) collide with other particles in the moonlet’s vicinity. Particles on trajectories labelled (c) collide with the moonlet directly. Particles on trajectories labelled (d) are on horseshoe orbits. Particles on trajectories labelled (e) leave the vicinity of the moonlet.

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