Appendix A: \(a_{i}\) and \(b_{j}\) in Eq. (23) and Eq. (24)
For Eq. (23), the coefficients of \(\sin E\) and \(\cos E\) are given in Eq. (A.1) and Eq. (A.3) if \(E \in [-\pi ,-\pi /2 ]\), Eq. (A.1) and Eq. (A.4) and if \(E \in [-\pi /2,0 ]\), Eq. (A.2) and Eq. (A.4) if \(E \in [0, \pi /2 ]\), and Eq. (A.2) and Eq. (A.5) if \(E \in [\pi /2,\pi ]\).
$$ \left [ { \textstyle\begin{array}{c} {{a_{0}}} \\ {{a_{1}}} \\ {{a_{2}}} \\ {{a_{3}}} \\ {{a_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} 0 \\ {{S_{12}}\, {S_{13}}} \\ {{S_{12}}\, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} \\ { - 2\, {S_{11}}\, {S_{13}}\, {S_{14}}} \\ { - {S_{11}}\, {S^{2}_{14}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} 0 \\ {0.9868} \\ { - 0.0507} \\ { - 0.2322} \\ { - 0.0370} \end{array}\displaystyle } \right ] $$
(A.1)
$$ \left [ { \textstyle\begin{array}{c} {{a_{0}}} \\ {{a_{1}}} \\ {{a_{2}}} \\ {{a_{3}}} \\ {{a_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {\mathrm{{0}}} \\ {{S_{12}}\, {S_{13}}} \\ {{S_{11}}\, {S^{2}_{13}} - {S_{12}}\, {S_{14}}} \\ { - 2\, {S_{11}}\, {S_{13}}\, {S_{14}}} \\ {{S_{11}}\, {S^{2}_{14}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {\mathrm{{0}}} \\ { - \mathrm{{0}}{\mathrm{{.9868}}}} \\ {\mathrm{{0}}{\mathrm{{.0507}}}} \\ { - \mathrm{{0}}{\mathrm{{.2322}}}} \\ {\mathrm{{0}}{\mathrm{{.0370}}}} \end{array}\displaystyle } \right ] $$
(A.2)
$$\begin{aligned} &\left [ { \textstyle\begin{array}{c} {{b_{0}}} \\ {{b_{1}}} \\ {{b_{2}}} \\ {{b_{3}}} \\ {{b_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {\frac{{{\pi ^{2}} ( {{S_{12}}\, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} )}}{4} - \frac{{{S_{11}}\, {S^{2}_{14}}\, {\pi ^{4}}}}{{16}} + \frac{{\pi \, {S_{12}}\, {S_{13}}}}{2} - \frac{{{S_{11}}\, {S_{13}}\, {S_{14}}\, {\pi ^{3}}}}{4}} \\ {{S_{12}}\, {S_{13}} + \pi ( {{S_{12}} \, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} ) - \frac{{{S_{11}}\, {S^{2}_{14}}\, {\pi ^{3}}}}{2} - \frac{{3\, {S_{11}}\, {S_{13}}\, {S_{14}}\, {\pi ^{2}}}}{2}} \\ { - {S_{11}}\, {S^{2}_{13}} - 3\, {S_{11}}\, \pi \, {S_{13}}\, {S_{14}} - \frac{{3\, {S_{11}}\, {\pi ^{2}}\, {S^{2}_{14}}}}{2} + {S_{12}}\, {S_{14}}} \\ { - 2\, {S_{11}}\, \pi \, {S^{2}_{14}} - 2 \, {S_{11}}\, {S_{13}}\, {S_{14}}} \\ { - {S_{11}}\, {S^{2}_{14}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {0.3000} \\ { - 1.4642} \\ { - 1.6921} \\ { - 0.4644} \\ { - 0.0370} \end{array}\displaystyle } \right ] \end{aligned}$$
(A.3)
$$\begin{aligned} &\left [ { \textstyle\begin{array}{c} {{b_{0}}} \\ {{b_{1}}} \\ {{b_{2}}} \\ {{b_{3}}} \\ {{b_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {\frac{{{S_{11}}\, {S^{2}_{14}}\, {\pi ^{4}}}}{{16}} - \frac{{{\pi ^{2}} ( {{S_{12}}\, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} )}}{4} + \frac{{\pi \, {S_{12}}\, {S_{13}}}}{2} - \frac{{{S_{11}}\, {S_{13}}\, {S_{14}}\, {\pi ^{3}}}}{4}} \\ {{S_{12}}\, {S_{13}} - \pi ( {{S_{12}} \, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} ) + \frac{{{S_{11}}\, {S^{2}_{14}}\, {\pi ^{3}}}}{2} - \frac{{3\, {S_{11}}\, {S_{13}}\, {S_{14}}\, {\pi ^{2}}}}{2}} \\ {{S_{11}}\, {S^{2}_{13}} - 3\, {S_{11}}\, \pi \, {S_{13}}\, {S_{14}} + \frac{{3\, {S_{11}}\, {\pi ^{2}}\, {S^{2}_{14}}}}{2} - {S_{12}}\, {S_{14}}} \\ {2\, \pi \, {S_{11}}\, {S^{2}_{14}} - 2 \, {S_{11}}\, {S_{13}}\, {S_{14}}} \\ {{S_{11}}\, {S^{2}_{14}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {\mathrm{{1}}.\mathrm{{0}}000} \\ \mathrm{{0}} \\ { - \mathrm{{0}}{\mathrm{{.4965}}}} \\ \mathrm{{0}} \\ { - 0.0370} \end{array}\displaystyle } \right ] \end{aligned}$$
(A.4)
$$\begin{aligned} & \left [ { \textstyle\begin{array}{c} {{b_{0}}} \\ {{b_{1}}} \\ {{b_{2}}} \\ {{b_{3}}} \\ {{b_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {\frac{{{\pi ^{2}} ( {{S_{12}}\, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} )}}{4} - \frac{{{S_{11}}\, {S^{2}_{14}}\, {\pi ^{4}}}}{{16}} + \frac{{\pi \, {S_{12}}\, {S_{13}}}}{2} - \frac{{{S_{11}}\, {S_{13}}\, {S_{14}}\, {\pi ^{3}}}}{4}} \\ {\frac{{{S_{11}}\, {S^{2}_{14}}\, {\pi ^{3}}}}{2} - \pi ( {{S_{12}}\, {S_{14}} - {S_{11}}\, {S^{2}_{13}}} ) - {S_{12}}\, {S_{13}} + \frac{{3\, {S_{11}}\, {S_{13}}\, {S_{14}}\, {\pi ^{2}}}}{2}} \\ { - {S_{11}}\, {S^{2}_{13}} - 3\, {S_{11}}\, \pi \, {S_{13}}\, {S_{14}} - \frac{{3\, {S_{11}}\, {\pi ^{2}}\, {S^{2}_{14}}}}{2} + {S_{12}}\, {S_{14}}} \\ {2\, {S_{11}}\, \pi \, {S^{2}_{14}} + 2 \, {S_{11}}\, {S_{13}}\, {S_{14}}} \\ { - {S_{11}}\, {S^{2}_{14}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {0.3000} \\ {1.4642} \\ { - 1.6921} \\ {0.4644} \\ { - 0.0370} \end{array}\displaystyle } \right ] \end{aligned}$$
(A.5)
For Eq. (24), the coefficients of \(\sin E\) and \(\cos E\) are given in Eq. (A.6) and Eq. (A.8) if \(E \in [-\pi ,-\pi /2 ]\), Eq. (A.7) and Eq. (A.9) and if \(E \in [\pi /2,3\pi /2 ]\).
$$ \left [ { \textstyle\begin{array}{c} {{a_{0}}} \\ {{a_{1}}} \\ {{a_{2}}} \\ {{a_{3}}} \\ {{a_{4}}} \\ {{a_{5}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} 0 \\ {\frac{{2\, {S_{11}}}}{\pi }} \\ 0 \\ { - \frac{{8\, {S_{12}}}}{{{\pi ^{3}}}}} \\ 0 \\ {\frac{{32\, {S_{13}}}}{{{\pi ^{5}}}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} 0 \\ {0.9993} \\ 0 \\ { - 0.1650} \\ 0 \\ {7.2904 \times {{10}^{ - 3}}} \end{array}\displaystyle } \right ] $$
(A.6)
$$ \left [ { \textstyle\begin{array}{c} {{a_{0}}} \\ {{a_{1}}} \\ {{a_{2}}} \\ {{a_{3}}} \\ {{a_{4}}} \\ {{a_{5}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {8\, {S_{12}} - 2\, {S_{11}} - 32\, {S_{13}}} \\ {\frac{{2\, {S_{11}}}}{\pi } - \frac{{24\, {S_{12}}}}{\pi } + \frac{{160\, {S_{13}}}}{\pi }} \\ {\frac{{24\, {S_{12}}}}{{{\pi ^{2}}}} - \frac{{320\, {S_{13}}}}{{{\pi ^{2}}}}} \\ {\frac{{320\, {S_{13}}}}{{{\pi ^{3}}}} - \frac{{8\, {S_{12}}}}{{{\pi ^{3}}}}} \\ { - \frac{{160\, {S_{13}}}}{{{\pi ^{4}}}}} \\ {\frac{{32\, {S_{13}}}}{{{\pi ^{5}}}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {0.2549} \\ {0.3349} \\ {0.7055} \\ { - 0.5545} \\ {0.1145} \\ { - 0.7290 \times {{10}^{ - 3}}} \end{array}\displaystyle } \right ] $$
(A.7)
$$ \left [ { \textstyle\begin{array}{c} {{b_{0}}} \\ {{b_{1}}} \\ {{b_{2}}} \\ {{b_{3}}} \\ {{b_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {{C_{11}}} \\ 0 \\ { - \frac{{4\, {C_{12}}}}{{{\pi ^{2}}}}} \\ 0 \\ {\frac{{16\, {C_{13}}}}{{{\pi ^{4}}}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {1.0000} \\ 0 \\ { - 0.4966} \\ 0 \\ {0.0370} \end{array}\displaystyle } \right ] $$
(A.8)
$$ \left [ { \textstyle\begin{array}{c} {{b_{0}}} \\ {{b_{1}}} \\ {{b_{2}}} \\ {{b_{3}}} \\ {{b_{4}}} \end{array}\displaystyle } \right ] = \left [ { \textstyle\begin{array}{c} {{C_{11}} - 4\, {C_{12}} + 16\, {C_{13}}} \\ {\frac{{8\, {C_{12}}}}{\pi } - \frac{{64\, {C_{13}}}}{\pi }} \\ {\frac{{96\, {C_{13}}}}{{{\pi ^{2}}}} - \frac{{4\, {C_{12}}}}{{{\pi ^{2}}}}} \\ { - \frac{{64\, {C_{13}}}}{{{\pi ^{3}}}}} \\ {\frac{{16\, {C_{13}}}}{{{\pi ^{4}}}}} \end{array}\displaystyle } \right ] \approx \left [ { \textstyle\begin{array}{c} {0.2958} \\ {1.4705} \\ { - 1.6953} \\ {0.4651} \\ { - 0.0370} \end{array}\displaystyle } \right ] $$
(A.9)
Appendix B: \(M_{\mathit{CE}}^{k}\) and \({C_{k}^{\mathrm{{den}}}}\) in Eq. (19)
The nonzero components of \(M_{\mathit{CE}}^{k}\) and \({C_{k}^{\mathrm{ {den}}}}\) are:
$$\begin{aligned} &M_{\mathit{CE}}^{1} ( 6,6 )=36e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e+1 )}^{2}},\\ &M_{\mathit{CE}}^{2} ( 6,6 )=36{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e+1 )}^{2}},\\ &M_{\mathit{CE}}^{3} ( 6,6 )=-24{{e}^{2}} {{ \bigl( 1- {{e}^{2}} \bigr)}^{3/2}} {{ ( e+1 )}^{2}},\\ &M_{\mathit{CE}}^{4} ( 3,6 )=48{{ \bigl( 1-{{e}^{2}} \bigr)} ^{7/2}},\\ &M_{\mathit{CE}}^{4} ( 6,6 )=-24\sqrt{1-{{e}^{2}}} {{ ( e+1 )}^{2}} \bigl( - {{e}^{3}}-4{{e}^{2}}+e+4 \bigr),\\ &M_{\mathit{CE}}^{5} ( 1,6 )=-48ae{{ \bigl( {{e}^{2}}-1 \bigr)} ^{4}}, \\ &M_{\mathit{CE}}^{5} ( 2,6 )=48{{ \bigl( {{e}^{2}}-1 \bigr)} ^{4}}, \qquad M_{\mathit{CE}}^{6} ( 1,6 )=48a{{ \bigl( {{e}^{2}}-1 \bigr)} ^{4}},\\ &M_{\mathit{CE}}^{7} ( 1,3 )=-16a{{e}^{2}} {{ \bigl( {{e} ^{2}}-1 \bigr)}^{2}} {{ ( e-1 )}^{3}} ( e+1 ), \\ &M_{\mathit{CE}}^{7} ( 1,6 )=-32a{{e}^{2}} {{ \bigl( {{e} ^{2}}-1 \bigr)}^{2}} {{ ( e-1 )}^{2}} ( e+1 ), \\ &M_{\mathit{CE}}^{7} ( 2,3 )=8e{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{3}} ( e+1 ), \\ &M_{\mathit{CE}}^{7} ( 2,6 )=16e{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{2}} ( e+1 ), \\ &M_{\mathit{CE}}^{7} ( 4,5 )=-2e{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{2}}, \\ &M_{\mathit{CE}}^{8} ( 1,3 )=16ae{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{3}} \bigl( -{{e}^{3}}-{{e}^{2}}+3e+3 \bigr), \\ &M_{\mathit{CE}}^{8} ( 1,6 )=16ae{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{2}} ( e+1 ) \bigl( {{e}^{2}}+3e+6 \bigr), \\ &M_{\mathit{CE}}^{8} ( 2,3 )=-8{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{3}} \bigl( -{{e}^{3}}-{{e}^{2}}+3e+3 \bigr), \\ & \begin{aligned} M_{\mathit{CE}}^{8} ( 2,6 )&=- ( 16e-16 ) {{ ( e-1 )}^{2}} {{ ( e+1 )}^{3}} \\ &\quad {}\times \bigl( {{e} ^{3}}+{{e}^{2}}+e-3 \bigr), \end{aligned} \\ &M_{\mathit{CE}}^{8} ( 4,5 )=2{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} \bigl( {{e}^{2}}+1 \bigr){{ ( e-1 )}^{2}}, \\ &M_{\mathit{CE}}^{9} ( 1,3 )=-16a{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{3}} \bigl( -{{e}^{3}}-{{e}^{2}}+2e+2 \bigr), \\ &M_{\mathit{CE}}^{9} ( 1,6 )=-16a{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{2}} ( e+1 ) \bigl( {{e}^{2}}+3e+4 \bigr), \\ &M_{\mathit{CE}}^{9} ( 2,3 )=8e{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{3}} ( e+1 ), \\ &M_{\mathit{CE}}^{9} ( 2,6 )=-16{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{2}} ( e+1 ), \\ &M_{\mathit{CE}}^{9} ( 4,5 )=-2e{{ \bigl( {{e}^{2}}-1 \bigr)} ^{2}} {{ ( e-1 )}^{2}}, \\ & M_{\mathit{CE}}^{10} ( 1,1 )=-16{{a}^{2}} {{e}^{3}} {{ \bigl( 1-{{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}},\\ &M_{\mathit{CE}}^{10} ( 1,2 )=16a{{e}^{2}} {{ \bigl( 1- {{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )} ^{2}}, \\ &M_{\mathit{CE}}^{10} ( 2,2 )=-4e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}}, \\ &M_{\mathit{CE}}^{10} ( 3,3 )=-4e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} ( e+1 ),\\ &M_{\mathit{CE}}^{10} ( 3,6 )=-16e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{2}} ( e+1 ),\\ &M_{\mathit{CE}}^{10} ( 4,4 )=-e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{2}}, \\ &M_{\mathit{CE}}^{10} ( 5,5 )=-e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} ( e+1 ),\\ & \begin{aligned} M_{\mathit{CE}}^{10} ( 6,6 )&=4e\sqrt{1-{{e}^{2}}} ( e+1 ) \bigl( {{e}^{5}}+{{e}^{4}} \\ &\quad {}+3{{e}^{3}}-5{{e}^{2}}-4e+4 \bigr), \end{aligned} \\ & M_{\mathit{CE}}^{11} ( 1,1 )=48{{a}^{2}} {{e}^{2}} {{ \bigl( 1-{{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}}, \\ & M_{\mathit{CE}}^{11} ( 1,2 )=-48ae{{ \bigl( 1-{{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )} ^{2}}, \\ & M_{\mathit{CE}}^{11} ( 2,2 )=12{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}}, \\ & M_{\mathit{CE}}^{11} ( 3,3 )=4{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} \bigl( -2{{e}^{3}}-2{{e}^{2}}+3e+3 \bigr),\\ & \begin{aligned} M_{\mathit{CE}}^{11} ( 3,6 )&=16\sqrt{1-{{e}^{2}}} {{ ( e-1 )}^{2}} ( e+1 ) \\ &\quad {}\times\bigl( -2{{e}^{3}}-3 {{e}^{2}}+2e+3 \bigr), \end{aligned} \\ & M_{\mathit{CE}}^{11} ( 4,4 )={{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} \bigl( 2{{e}^{2}}+1 \bigr){{ ( e-1 )}^{2}},\\ & M_{\mathit{CE}}^{11} ( 5,5 )={{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} ( e+1 ), \\ & \begin{aligned} M_{\mathit{CE}}^{11} ( 6,6 )&=4\sqrt{1-{{e}^{2}}} ( e+1 ) \bigl( {{e}^{5}}+{{e}^{4}}+3{{e}^{3}} \\ &\quad {}+11{{e}^{2}}-4e-12 \bigr), \end{aligned} \\ & M_{\mathit{CE}}^{12} ( 1,1 )=-48{{a}^{2}}e{{ \bigl( 1- {{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )} ^{2}},\\ & M_{\mathit{CE}}^{12} ( 1,2 )=16a{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} \bigl( {{e}^{2}}+2 \bigr){{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}},\\ & M_{\mathit{CE}}^{12} ( 2,2 )=-12e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}}, \\ & M_{\mathit{CE}}^{12} ( 3,3 )=4e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} \bigl( -{{e}^{3}}-{{e}^{2}}+2e+2 \bigr), \\ & M_{\mathit{CE}}^{12} ( 3,6 )=16{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{2}} \bigl( {{e}^{3}}+4{{e}^{2}}+4e+1 \bigr), \\ & M_{\mathit{CE}}^{12} ( 4,4 )=-e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} \bigl( {{e}^{2}}+2 \bigr){{ ( e-1 )}^{2}}, \\ & M_{\mathit{CE}}^{12} ( 5,5 )=e{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} ( e+1 ), \\ & \begin{aligned} M_{\mathit{CE}}^{12} ( 6,6 )&=-4\sqrt{1-{{e}^{2}}} ( e+1 ) \bigl( {{e}^{6}}+{{e}^{5}}-5{{e}^{4}}-21{{e}^{3}} \\ &\quad {}-4 {{e}^{2}}+20e+8 \bigr), \end{aligned} \\ & M_{\mathit{CE}}^{13} ( 1,1 )=16{{a}^{2}} {{ \bigl( 1- {{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )} ^{2}}, \\ & M_{\mathit{CE}}^{13} ( 1,2 )=-16ae{{ \bigl( 1-{{e}^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )} ^{2}}, \\ & M_{\mathit{CE}}^{13} ( 2,2 )=4{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{4}} {{ ( e+1 )}^{2}}, \\ & M_{\mathit{CE}}^{13} ( 3,3 )=-4{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} \bigl( -3{{e}^{3}}-3{{e}^{2}}+4e+4 \bigr), \\ & M_{\mathit{CE}}^{13} ( 3,6 )=-16{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{2}} ( e+1 ){{ ( e+2 )} ^{2}}, \\ & M_{\mathit{CE}}^{13} ( 4,4 )={{e}^{2}} {{ \bigl( 1-{{e} ^{2}} \bigr)}^{3/2}} {{ ( e-1 )}^{2}} , \\ & M_{\mathit{CE}}^{13} ( 5,5 )=-{{ \bigl( 1-{{e}^{2}} \bigr)} ^{3/2}} {{ ( e-1 )}^{3}} ( e+1 ), \\ & \begin{aligned} M_{\mathit{CE}}^{13} ( 6,6 )&=-4\sqrt{1-{{e}^{2}}} ( e+1 ) \bigl( {{e}^{5}}+9{{e}^{4}}+19{{e}^{3}} \\ &\quad {}+11{{e} ^{2}}-20e-20 \bigr), \end{aligned} \\ &M_{\mathit{CE}}^{l}=p{{e}^{2}} {{ ( 1+e )}^{9/2}} {{ ( 1-e )}^{5/2}}M_{\mathit{CE}}^{l},l=1,2 \cdots 13,\\ &C_{8}^{\text{den}}=-eC,C_{13}^{\text{den}}=C, where C=4{{e}^{2}} {{ \bigl( 1-{{e}^{2}} \bigr)}^{8}}. \end{aligned}$$
Appendix C: \(\dfrac{{d S}}{{d E}}\)
$$\begin{aligned} \dfrac{{dS}}{{dE}} &= - \dfrac{1}{m} \dfrac{{d \Vert {{\mathbf{{M}}^{T}}{\boldsymbol{\lambda }}} \Vert }}{{dE}} \\ & = - \dfrac{1}{m} \dfrac{{{{\boldsymbol{\lambda }}^{T}}{\mathbf{{M}}}}}{{ \Vert {{\mathbf{{M}}^{T}}{\boldsymbol{\lambda }}} \Vert }} \dfrac{{d ( {{\mathbf{{M}}^{T}}{\boldsymbol{\lambda }}} )}}{{dE}} \\ & = - \dfrac{1}{m} \dfrac{{{{\boldsymbol{\lambda }}^{T}}{\mathbf{{M}}}}}{{ \Vert {{\mathbf{{M}}^{T}}{\boldsymbol{\lambda }}} \Vert }} \biggl[ {{ \dfrac{{d ( \mathbf{{M}} )}}{{dE}}}^{T}} {\boldsymbol{\lambda }} + { \mathbf{{M}}^{T}}\dfrac{{d{\boldsymbol{\lambda }}}}{{dE}} \biggr]. \end{aligned}$$
(C.1)
The non-zero terms in \({\dfrac{{\partial {\mathbf{{M}}}}}{{\partial E}}}\) are:
$$\begin{aligned} &\dfrac{{\partial {\mathbf{{M}}} ( {1,2} )}}{{\partial E}} = - \dfrac{{2e\sqrt{{p^{3}}} \sin L}}{{\sqrt{1 - {e^{2}}} w}}, \qquad \dfrac{{\partial {\mathbf{{M}}} ( {2,1} )}}{{\partial E}} = \dfrac{{\sqrt{p} \cos L \, w}}{{\sqrt{1 - {e^{2}}} }}, \\ &\dfrac{{\partial {\mathbf{{M}}} ( {2,2} )}}{{\partial E}} = -\dfrac{{\sqrt{p} \sin L ( {{e^{2}} \cos ^{2}{{ L }} - {e^{2}} + 2\, e \cos L + 2} )}}{{\sqrt{1 - {e^{2}}} \, w}}, \\ &\dfrac{{\partial {\mathbf{{M}}} ( {3,1} )}}{{\partial E}} =\dfrac{{\sqrt{p} \sin L \, w}}{{\sqrt{1 - {e^{2}}} }}, \\ &\dfrac{{\partial {\mathbf{{M}}} ( {3,2} )}}{{\partial E}} = \dfrac{{\sqrt{p} ( {{e^{2}} \cos ^{3} {{L}} + 2\, e \cos ^{2} {{ L }} + e + 2 \cos L} )}}{{\sqrt{1 - {e^{2}}} \, w}}, \\ &\dfrac{{\partial {\mathbf{{M}}} ( {4,3} )}}{{\partial E}} = - \dfrac{{\sqrt{p} \sin L }}{{2\, \sqrt{1 - {e^{2}}} \, w}}, \\ &\dfrac{{\partial {\mathbf{{M}}} ( {5,3} )}}{{\partial E}} = \dfrac{{\sqrt{p} ( {e + \cos L } ) }}{{2\, \sqrt{1 - {e^{2}}} \, w}}, \\ &\dfrac{{d{\boldsymbol{\lambda }}}}{{dE}} = \dfrac{1}{{\sqrt{1 - {e^{2}}} }} \left ( \textstyle\begin{array}{c@{\quad }c@{\quad }c@{\quad }c@{\quad }c@{\quad }c} 0&0&0&0&0&{ - \frac{{3 ( {e \cos L + 1} )}}{{2\, p}}} \\ 0&0&0&0&0&{2 \cos L} \\ 0&0&0&0&0&{2 \sin L} \\ 0&0&0&0&0&0 \\ 0&0&0&0&0&0 \\ 0&0&0&0&0&{ - 2\, e \sin L } \end{array}\displaystyle \right )^{T}{\boldsymbol{\lambda }}, \end{aligned}$$
where \(w = 1+e\cos L\).