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Fig. 6

image

Allowed zone for P9. The red zone (C14) is excluded by the analysis of the Cassini data up to 2014 (Sect. 4). The pink zone (C20) is how much this zone can be enlarged by extending the Cassini data to 2020 (Sect. 4). The green zone is the most probable zone for P9 (v ∈ [ 108°:129° ]), with maximum reduction of the residuals at v = 117.8° (blue dot P9). The white zone is the uncertainty zone where the P9 perturbation is too faint to be detected.