Argelius II
The Class M planet Argelius II in the Argelius system is the homeworld of the humanoid Argelians. The leader of the planetary government is called the Prefect.
The planet was a popular shore leave destination as well as a strategically-important space port for Starfleet in the 2260s. In 2267, the planet was the scene of several murders committed by the entity known as Redjac.
Captain Kirk and Lieutenant Commander Scott both enjoyed several visits of the planet, though Scott was accused to be a murderer during his first visit. (TOS: "Wolf in the Fold")
Scotty later recalled the incident on Argelius with Ensign Kane during his visit aboard the USS Enterprise-D in 2369. (TNG: "Relics")
Background
According to a non-canon source, 'The Worlds of the Federation, the star that Argelius II orbits is named Argelius B (apparently part of a binary star system with Argelius A), and the Argelians refer to their world as Nelphia.
