start the track determination at the orbit through the first point of the track and then iterate the track calculation to get closer to it; part of dealing with #194
start the track determination at the orbit through the first point of the track and then iterate the track calculation to get closer to it; part of dealing with #194

followthesheep/galpy,followthesheep/galpy,followthesheep/galpy,followthesheep/galpy,jobovy/galpy,jobovy/galpy,jobovy/galpy,jobovy/galpy