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Table 2
Main frequencies and periods that describe the orbit of Phobos used in the analysis.
| Arg. | Freq (rad/days) | Per (days) | Month |
|
|
|||
| ℓ | 19.694 | 0.3190 | anomalistic month (periapse to periapse) |
| D | 19.693 | 0.3191 | synodic month (new moon to new moon) |
| F | 19.710 | 0.3188 | draconic month (node to node) |
| ℓ ′ | 0.009145 | 687.07 | |
| ψ | 6.124 | 1.026 | |
| ϖ ∗′ | 3.06 × 10-7 | 20.5 × 106 | |
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