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Fig. 5

image

Example of a successful capture of spin axis into the low-frequency Slivan state for a fictitious Themis member. Initially, the rotation axis orientation was identical to the north ecliptic pole (basically zero obliquity), and the rotation period 3 h was slowly increased by 2 × 10-3 h/Myr. Spin axis evolution, represented as in Fig. 3, is shown for selected time intervals (T) of our simulation noted at the top of each panel. The leftmost part shows the initial situation (no resonant zone about C2 for s7 frequency), the rightmost part shows the final state (spin captured in a resonance zone about C2 at about 40° obliquity, shown in gray). Rotation period at mean epoch of the displayed interval () of time is given for each of the panels.

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