|Location:||In orbit of Archanis|
Near the Federation-Klingon border
United Federation of Planets
In the late 2260s, a Federation research outpost on this planet was attacked by unidentified raiders. A hundred civilians were killed in the raid. This was one of several incidents that had taken place since a truce was declared between the two galactic powers. Although there was no proof of Klingon involvement in these incidents, some in the Federation believed them responsible. The Klingons claimed that they had observed the treaty to the letter for three years and that they were not responsible for the raids.
In 2268, while under the influence of the Beta XII-A entity, Pavel Chekov believed he had a brother, Piotr Chekov, who had been killed by the Klingons at the research outpost on Archanis IV. (TOS: "Day of the Dove")
Prior to the beginning of the Federation-Klingon War, Gowron sent a message to the Federation Council, telling them to abandon all starbases and military installations in the sector. During the war, the planet was raided by a Klingon force. As a condition of ending the war, Chancellor Gowron stated that the Federation must allow the Klingon Empire to annex Archanis and other worlds captured by Klingons. Captain Benjamin Sisko told the Klingon leader that he couldn't count on that condition being meet. (DS9: "Broken Link", "Apocalypse Rising", "Nor the Battle to the Strong")