Zed Lapis Dyson Sphere

The Zed Lapis Sphere was the first Dyson Sphere discovered by Starfleet. As of its discovery 46125.3 it was the largest structure ever discovered and known by the Federation.

Dimensions
This Dyson Sphere was extremely massive, its immensity measured at 200,000,000 km in length, width/diameter, and draft (height). Its coverage was approximately large enough to contain 250,000,000 Class-M planets, the most average sized Class-M planets are earth-sized. (250,000,000 x (earths mass) 6e24 kg = 1.5e33)

Capacity
As stated by Lt Cmdr. Data in 2369, the immense size of the sphere made it capable of containing nearly or over 1,000,000,000,000,000 humanoids.

Star
The Sphere surrounded a G-type Star which emitted 10,000,000,000,000,000,000,000,000,000,000,000 J of energy each year, the amount of energy needed for the sphere to operate efficiently. It is unknown what the stars name, but over time the star was given the name Zed Lapis I, named after the sphere at its sector.

Affiliation
The overseers/inhabitants of the sphere are unknown. No species in its sector or in the surrounding sectors had any species capable of such feats, nor anything archaeological data could uncover. Skeptics and theorist theorize the most likely answer is that the species who created it:
 * Perished on the sphere and perpetual lack of maintenance caused external leaks and residue to also perish.
 * The creators created it long ago, harvested possibly many tredecillions or sexdecillions of joules of energy and left.
 * The creators territory/home was far, far away.