Fig. 7
Distribution of (a, e) of the orbits of the captured moons from the outer moon region of IG18 at the encounter distance of qenc = 0.003 au. Warmer colours mean higher numbers and grey dots are the observed satellite; cf. Fig. 1. The red solid line marks atidal circularisation isochrone of 4 Gyr; the blue (short-)dashed line represents an equal pericentre distance q = 30 RNep; cf. Fig. 2.
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