Archanis IV
Archanis IV, or, more simply, as Archanis, was the inhabited fourth planet in the Archanis system. This system, located near to the Federation-Klingon border, was in the Archanis sector, in the Beta Quadrant. (; )

In the late 2260s, an alleged 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 Federation and the Klingon Empire. 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 was made to believe he had once had a brother, Piotr Chekov, who had been killed by the Klingons at the research outpost on Archanis IV. In reality, he had no brother; the entity wished to foment hostility between the crew of the  and the Klingons. () 

Circa 2272, the Klingons relinquished their claim on the Archanis sector to the Federation. ()

Prior to the beginning of the , 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 met. In 2399, as depicted on a star chart in Fleet Admiral Kirsten Clancys office at Starfleet Headquarters, the Archanis system was in or near Klingon space. (; )

Appendices

Background information 

This planet's quadrant of origin is inferred based on the position of its star as seen in the star chart appearing in the  episode .

"are-KANE-is" was the pronunciation for this planet's name from the  pronunciation guide for "Broken Link".

This planet, introduced in "Day of the Dove", was originally to have been called Alpha IV. On , however, Kellam de Forest suggested changing the planet's name to Arcanis IV, as the name Alpha IV did "not conform with proper astronomical nomenclature."  Thereafter, in the revised final draft script of "Day of the Dove", the name of this planet was spelt "Arcanis 4".

The fate of Archanis IV after the brief Federation-Klingon war ended in mid-2373 has not been revealed on screen.

According to the Star Trek: Star Charts ("United Federation of Planets I"), in 2378, Archanis IV was a Federation member.

External link 
 

de:Archanis IV
ja:アーケイナス4号星
nl:Archanis IV
Archanis 04