Talos II

Talos II was the second planet in the Talos system. This planet was located in the Talos star group, a stellar cluster of the Alpha Quadrant. The planet was approximately 2 light years from Starbase 11.

In 2254, the position and orbital path of Talos II in an inner system map was displayed on the bridge of the USS Enterprise. The planet was located at 1.8 astronomical units from the stars at the system's center. (TOS: "The Cage", "The Menagerie, Part I", production art)

This planet was only mentioned in writing.
This planet's quadrant of origin was inferred based on the location of its sister planet Talos IV from the Star Trek: Discovery episode "If Memory Serves".
The Star Trek: Star Charts (pp. 37 & 40) classified Talos II as a H-class planet.