Figure 8.

As in Figure 6, but for (a) period $2\pi /[d\overline{\omega }/dt]$ associated with the rate of change of longitude of perigee (Equation 4), (b) nodal period $-2\pi /[d\mathrm{\Omega }/dt]$ (Equation 5), (c) $\xi$, the lunar core‐mantle boundary parameter (Equation 49), and (d) $K_{Moon}/C_{Moon}$ (Equation 51), another parameter in the lunar core‐mantle boundary equations (Section 5.3). Note that $d\mathrm{\Omega }/dt$ is negative.