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Table 3
Frequency in arcsec yr−1 of the largest-amplitude Fourier harmonic for each proper mode of the Poincaré variables 
over the timeinterval [0, 20] Myr.
| g1 | g2 | g3 | g4 | s1 | s2 | s3 | s4 | |
|---|---|---|---|---|---|---|---|---|
| LaX13b | 5.546 | 7.457 | 17.388 | 17.928 | –5.617 | –6.983 | –18.844 | –17.759 |
| La90 | 5.531 | 7.460 | 17.379 | 17.927 | –5.620 | –7.011 | –18.846 | –17.758 |
 |
5.577 | 7.446 | 17.390 | 17.932 | –5.588 | –6.993 | –18.901 | –17.817 |
 |
5.631 | 7.457 | 17.371 | 17.923 | –5.602 | –7.071 | –18.922 | –17.817 |
 |
5.560 | 7.453 | 17.396 | 17.935 | –5.628 | –7.002 | –18.894 | –17.816 |
 |
5.576 | 7.446 | 17.390 | 17.932 | –5.589 | –6.993 | –18.900 | –17.816 |
 |
5.577 | 7.446 | 17.390 | 17.932 | –5.587 | –6.993 | –18.901 | –17.817 |
Notes. For solutions LaX13b and La90, the proper modes 
defined in Laskar (1990c) are employed, and for our solutions we use the proper modes
.
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