König family exhibits a convergence of nodes. The range of ΔΩ with respect to (3815) König (green; top) is plotted together with individual values (grey). For each body, we used a set of 20 clones with different Yarkovsky effect and we selected the best clone at each time step. Not all bodies converge, because some of them are interlopers. The temporal dependence ΔΩ(t) exhibits local minima, in particular, 14.6 Myr and 22.7 Myr seem to be possible ages. For 22.7 Myr, the converging orbits of the best clones were plotted (coloured; bottom). For 14.6 Myr, a different set of clones would have to be selected. The orbits often exhibit more than one differential-precession cycle. See also Fig. 5.