I’ve a question for any trajectory experts out there:
The Pioneer and Voyager probes discovered new moons during their flybys of our four giant planets (and indeed rings). These didn’t come as much of a surprise, as they had been theorised to be there. But they must have had an effect on the crafts' trajectories. So, besides the known bodies, how did the flight dynamics teams factor in the gravitational influence of possible “unknown unknowns”, as it were?
I’m thinking of Voyager 1’s Titan flyby in particular. The target window was incredibly narrow and new moons were being discovered even as it approached Saturn. Did the FiDos just leave a large enough margin in their calculations to cover unknowns, knowing they’d be pretty small; or did they detect the influence of these new bodies by changes to the craft’s trajectory, and update accordingly?
Any links to scholarly articles etc much appreciated.