The Urch system was located in the Unknown Regions and contained the planet Urch, which was the homeworld of the sentient Urchiv-ki species and the capital of its Tower Dimension government. The Tower Dimension's Urch Planetary and Space Control monitored space traffic around Urch. In 19 BBY, the Tower Dimension was subjugated by the hegemony known as the Nikardun Destiny.
At some point after the subjugation, the Chiss Ascendancy sent Ambassador Boadil'par'gasoi, core name "Ilparg," on a diplomatic mission to Urch aboard the Nightdragon man-of-war warship Vigilant. After the starship's arrival, an Urchiv-ki traffic controller refused Ilparg's visit before several Nikardun Destiny–affiliated starships attempted to encircle and capture the Vigilant. The Chiss man-of-war then escaped to hyperspace.
The Urch system appeared in the 2020 novel Thrawn Ascendancy: Chaos Rising, written by Timothy Zahn as part of his Star Wars: The Ascendancy Trilogy.
The Urch system appeared in the 2020 novel Thrawn Ascendancy: Chaos Rising, written by Timothy Zahn as part of his Star Wars: The Ascendancy Trilogy.