Hi, I guess i'm 1st up.
Horizon controlled planets typically have at least one of these bases in orbit.
The Horizon starbase can be found at any major trade hub, serving as a way to keep Horizon's economy up they have been known to have been, at least in one case, converted into more of a 'spacemall' than a starbase.

Often found in the immediate vicinity of any Horizon starbase, These weapons platforms serve as a defence for any ranged attack on a horizon base. they are typically found positioned within railgun range of the main base traffic, placing them out of most other weapon's firing range making them near invincible to any close range attack on the base while dealing massive amounts of damage.

Often found close to horizon starbases, the Horizon station is typically used for scientific and civilian use, keeping close to the horizon starbase where they are free to indulge in any research or experimentation without the risk of pirate attacks.
Well done, you survived this massive post.