Vistil Major was a planet located somewhere in the space of the galaxy's Alpha or Beta Quadrants, in orbit of the Vistil star system, at coordinates 5.04N 2.67W.

In the 23rd century, Vistil Major was home to a Vulcan colony, a noted center of science, culture and trade. By reference stardate 2/2306.01, the world had a population of 1.01 billion individuals, mostly Vulcan, and the government was a full-status colonial member of the Federation. (FASA RPG module: The Federation)