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Fig. 2

image

Differences in distance after the fit between the model and the spacecraft observations for Phobos and Deimos (left: right ascension; right: declination). The initial positions and velocities of the satellites (at epoch J2000, i.e., Julian day 2 451 545.0), the Martian dissipation quality factor Q, and the forced libration amplitude of Phobos were fit.

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