Imma say jump to the parent star then, cause the FC orbits whatever you jump it to.Leesti. There are a lot of systems like this where fleet carriers are at these lagrange points
1. If the system is new to you (first time visit), you can only jump to the main star or wherever you are assigned to, depending on the traffic.
Edit : If new to the system, jump there first, then after cool down, perform #2.
2. If you have visited the system before, there is a System map next to "set carrier destination" option. Select the system map and select a planet to jump directly to.
That's the problem, can't set destination to a lagrange point but carriers are obviously orbiting them.
I seem to remember there being a bug to get the fleet carrier to orbit a lagrange point but I can't find that post anywhere.