Effects of relaxing the 0.3 au periastron distance. Top row: tidal despinning timescales for known transiting giant planets. Points show stellar age vs. periastron distance and are colored according to τ_spin/Age, where τ_spin is evaluated system by system, assuming ﹩{Q}_{p}^{{\prime} }=1{0}^{5.5}﹩. Solid curves show τ_spin for ﹩{Q}_{p}^{{\prime} }=1{0}^{5.5}﹩, assuming Jupiter-like planetary properties. The dashed horizontal line marks the age of the Universe, and the dashed vertical line marks the adopted 0.3 au cut. Bottom row: Hill sphere constraints for moons. Points show the planetary Hill radius as a function of periastron distance and are colored according to R_Hill/R_Roche, with the Roche distance evaluated assuming a satellite density of 3 g cm⁻³. The color scale is centered at R_Hill/R_Roche = 20, motivated by the fact that most large regular satellites in the solar system orbit within 0.05 R_Hill. The adopted 0.3 au cut is conservative: some systems at smaller periastron distances may retain measurable rotational oblateness or have large enough Hill radii for long-lived moons.