Enceladus crater production function shows steeper small-crater slope than Moon or TNOs

Wong et al. compiled a geomorphologically classified global crater database from Cassini imagery and derived the crater production function empirically without assuming impactor sources or surface evolution timelines. The resulting high-order polynomial fit reveals a distinct break in slope at small diameters, steeper than both the Moon/Mars chronology and current TNO size-frequency models. This discrepancy implies either enhanced production of small impactors at Saturn or unrecognized erasure processes on other bodies. The work supplies the missing observational anchor for any future Enceladus chronology system and highlights the need to test whether the same function applies to other Saturnian satellites. If shared, it would observationally bound the small-end slope of the outer solar system impactor population independent of dynamical simulations.