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Table 1
Frequency analysis of the true longitude of Europa.
| Freq. (rad/days) | Per (days) | Mag (″) | Phase (°) | |
| j | ωj | Pj | Hj | αj |
|
|
||||
| L1 − L2 | 1.782230 | 3.525463 | 3829.205 | –75.737 |
| ν + ϖ3 | 0.013034 | 482.056270 | 177.012 | 247.453 |
| ν + ϖ4 | 0.012939 | 485.603204 | 93.901 | 85.580 |
| L2 − ϖ3 | 1.769195 | 3.551437 | 89.915 | 216.810 |
| L2 − ϖ2 | 1.768645 | 3.552542 | 80.478 | 181.379 |
| ν + ϖ2 | 0.013585 | 462.514730 | 63.444 | 102.910 |
| L2 − ϖ4 | 1.769291 | 3.551245 | 50.820 | 18.661 |
| L2 − L3 | 0.891115 | 7.050927 | 41.001 | 142.128 |
| Ψ | 0.003051 | 2059.388286 | 40.964 | 109.334 |
| LS | 0.001450 | 4332.938725 | 37.853 | 122.629 |
| 2L1 − 2L2 | 3.564459 | 1.762732 | 18.712 | 208.531 |
| 3L2 − 3L3 | 2.673344 | 2.350309 | 18.141 | 246.387 |
| ν + ϖ1 | 0.015571 | 403.515373 | 13.050 | –29.048 |
| − Ω4 + Ω0 | 0.000030 | 209 871.378822 | 7.045 | 161.670 |
| − Ω3 + Ω0 | 0.000125 | 50 324.176598 | 6.730 | 127.823 |
| 2LS | 0.002900 | 2166.518223 | 4.248 | 87.421 |
| – | 1.795264 | 3.499868 | 4.097 | –8.282 |
| 2ν + Ω2 + Ω3 | 0.025120 | 250.130673 | 3.468 | 142.546 |
| – | 3.539784 | 1.775020 | 3.367 | 17.141 |
| 2LS + 2ϖ4 + Ω1 | 0.000649 | 9676.813046 | 2.923 | –12.788 |
| 2ν + 2Ω2 | 0.024675 | 254.634447 | 2.904 | 11.386 |
Notes. The initial date is J1950.
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