Dynamical effects of Enceladus plume forcing in the Saturn-Enceladus three-body environment — E8 Intelligence Research

Enceladus' south-polar plumes create a structured and variable environment that can perturb low-altitude spacecraft trajectories near the moon. In this work, we develop a reduced-order multi-vent plume model that represents the outflow as a combination of discrete jets and a diffuse component, including both water vapor and icy grains. This plume field is coupled to motion within the Saturn--Enceladus circular restricted three-body problem to quantify the dynamical response to plume-induced forcing. The results show that Saturn's gravity dominates the large-scale trajectory evolution, while plume encounters produce localized perturbations concentrated near the south-polar region. Although small in magnitude, repeated plume encounters produce measurable differences between otherwise identical plume-perturbed and no-plume trajectories. Signed differences in semimajor axis, eccentricity, and inclination exhibit predominantly oscillatory behavior over the simulated intervals. The cumulativ Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com