William's Pit was a planet located somewhere in the space of the galaxy's Alpha or Beta Quadrants, in orbit of the Pasara Majoris star system, at coordinates 1.04N 4.22E.

In the 23rd century, William's Pit was home to a Human colony noted for agriculture. By reference stardate 2/2306.01, the world had a population of less than 100,000 individuals, mostly Human, chartered as a dependent colony of the Federation. (FASA RPG module: The Federation)