Time period where imaging requirements are met for a variety of flyby close approach distances and velocities. The time includes both inbound and outbound imaging opportunities. (Top) Analysis if the NAC is on a gimbal. The duration is relatively consistent even to low flyby distances, suggesting that closest approach could be tailored by the target without losing observing data or set from other constraints. (Bottom) No-gimbal case. The TACO tour includes flybys at a 10–20 km s⁻¹ range, which limit observation time at the required pixel scale.