Wolf 359 is a red dwarf star. The only reason for the settlement here is that it lies on the Jump-1 route from Earth to Procyon and beyond. The inner system has a dense asteroid belt, that contains the basic starport. The starport is home to a number of refugee families who have been unable to find passage onwards to Procyon. Asteroid miners extract Helium 3, which is sold on as premium fuel at the starport. Smugglers & outlaws are suspected to use the belt as a hideout. There is also a recently established Earth Union fleet observation post - its mission is to support the blockade against Procyon.
There is a single planet - a gas dwarf (named "Cub") in the far out system. A small deuterium mining post extracts fuel from its atmosphere. Cub is believed to be a captured planet. The old Earth Union sponsored a research base to investigate it. The base is now running short of supplies.
Wolf 359 is a flare star, which can suddenly emit deadly bursts of X-rays. Habitats and ships in the inner system must be flare shielded at all times.