Koinonian homeworld
The Koinonian homeworld was an inhabited planet. This planet was home to two sentient species, the extinct corporeal s and their non-corporeal  neighbors who still inhabited the desolate planet in the 24th century. The planet was classified as M-class, type 4, and was considered only marginally suitable for Human habitation. The radiation factor was measured at 6 and the result of scans for minerals were unreliable, possibly due to the radiation. It had a Freeman  of 0.017453, a planetary body of K2, a mass of 8.02 kilograms, and a circumference of 1.31 kilometers. 

The corporeal Koinonians destroyed their entire race and ravaged the planet in the Koinonian Wars and left behind only dust and rocks on the surface. Some underground caverns, including the ceremonial chamber, and tunnels still remained intact, but the rest of the planet was completely barren.

The  did some archeological research on the planet in 2366. During the research, Lieutenant Marla Aster was killed by an explosive device, a relic of the wars. Later, the crew of the Enterprise-D learned of the existence of the non-corporal lifeforms through the actions of this species to atone for the death of Aster. ()

Unnamed planets
Homeworlds