...so couldn't there be a tool?
Actually there are such tools.
Users just drop in the inputs and a number pops out?
It is maybe not such easy but it comes near.
relating to [...] position ...
Because of orbital dynamics, "position" is not so easy, but I assume you are aware of this topic
What am I missing?
You are missing e.g. ESAs "...
I am not a lawyer. Still, I would like to submit this strawman answer to my own question, for you to criticize.
The language of Article VI is open to different interpretations. I can see at least two, and mutually contradicting.
The first, call it the “strict interpretation”, is that ONLY the US can “authorize and continuously supervise” the activities of ...