Astrometric and normal point residuals for Titan, Hyperion, Iapetus, and the small Saturnian moons used in this analysis. The panels display Gaia observations of Hyperion (a, b), Cassini and Voyager imaging residuals for the small and Lagrangian moons (c, d), and the outer major moons (f), along with the Cassini radio science normal points for Titan (e). The variance and covariance matrices of Titan’s state at the times of the Cassini flybys can be provided upon request.