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Fig. 8


Libration of the asteroid clones around the 2-1-1 zero order three-body mean motion resonance between the asteroid, Jupiter and Mars. Top left and bottom left plots are for 7343 while the plots on the right refer to 154 634. The top plots (from Batch 2) use the lower limit for the density in each case and a thermal conductivity of 4 × 10-3 while the bottom plots (Batch 1) use density 2130 kg m-3 and thermal conductivity of 2.5 × 10-3. The critical angle for both asteroids, as represented by their clones, currently librates around φ =  −90° (i.e. at t = 0). LoD (see text) occurs between 1 and 4 × 105 years for 7343 whilst 154 634 survives within the resonance until some time between 4 and 8 × 105 years.

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