Oceanis

The planet Oceanis orbits a close binary consisting of a yellow and an orange star.  The surface is covered in a global ocean thats dotted with green islands.  The planet's orbit has a high eccentricity bringing it closer then farther away from the sun.  During the summer the cold oceans start warming up as the planet moves closer, causing massive hurricane like storms that sweep across the planet.

Oros

Oros is a system sitting between the Betelgeuse Region and the Canopus/Adara Region.

Orsto

Orsto's primary world is a cold world which doesn't contain any surface water, instead the planets water is trapped in ice just the below the surface.  Orsto has long been a candidate for terraforming by bringing the underground water to the surface, but no government or company has ever wanted to dedicate the resources.  The planet is simply to cold and terraforming would cost an enormous amount of money.

Overden

Militaraly speaking Overden is an important world, the planet is home to stockpiles of weapons used by both the United Worlds and planets in the Polaris Region.  Underground bunkers are filled with old weapons that are to old to be used to valuable to be destroyed.  When a military force needs extra weapons in a hurry, and they cannot be manufactured quick enough, they go the the stockpiles held on Overden.