#### Thorsten

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When I find a bit more time, I'll insert this into a two-variable root-finding algorithm.

Could we make a deal, that you prepare another version in such a way, that you don't care how long it takes to compute

However, for mill-G thrusts, the gravity model in the code may well need to include other gravitating bodies since the insertion burn may start outside or at the edge of Earth's SOI at 0.5 million km or more.

Please allow me a smile at the fact that after telling me that it's not as simple as fitting a numerical solution to the desired target you do it anyway, that we seem to reach agreement that brute-force numerics might actually feasible for planning and that it becomes apparent that for the multi-body gravitational problem all Kepler analytic cleverness disappears pretty quickly.

Well, any transit, really. It doesn't have to be a complete trajectory solver too, just a tool that can work with low acceleration for ejection and insertion, allowing to plan a low-thrust trajectory with some fiddling

It's a hard problem for analytical (aka 'clever') solution - I believe you pretty much have to compute the trajectory by fast-forwarding the equations of motion.

Which I think is fairly doable - but what do I know :lol: ?