System
Perimeter
Perimeter is the system next door to Jita. Every moon in Perimeter and the planet it belongs to.
System
Gates lead to
Where you can jump from here.
Contents
Moons matter for two things: they hold the moon mining beacons in null security space, and they are where most stations and player structures are anchored. What a moon contains is not published by the game API - only its name and position are.