Comparison of rotation periods derived from Kepler K2 observations with those reported in the SsODNet. Blue points represent asteroids with known periods but without quality flags, while orange points indicate asteroids with a quality flag of U=3. The dashed red line indicates a 1:1 agreement between Kepler and comparison periods, while the dashed green lines represent half and twice the Kepler period. Error bars reflect uncertainties in the period determinations, where available.