I never noticed this before, but does "Sector: Alpha Centauri β" mean some kind of a Beta sector in the Alpha Centauri system or the B component (Alpha Centauri B, the smaller of the binary stars) of the system and the space surrounding it? 

Is the space station in orbit around the Alpha Centauri B (as suggested by the name) or does "Sector Beta" refer to a Lagrangian point, possibly between the two stars?

My intention is not to pick on this, but rather I am curious to find out more about the universe created.