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The Arucanis Arm is an unexplored region of space in the Celes sector in the Beta Quadrant. There are populated planets, including homeworlds and colonies. Factions operating in this region included the Federation, the Klingon Empire and Nausicaans. (STO mission: "Explore the Arucanis Arm")
In 2409, Lieutenant Grall was responsible for Starfleet exploration missions into the Arucanis Arm. Most of the systems within the cluster were unknown. (STO mission: "Explore the Arucanis Arm") Some of the planets required commodities such as shield generators. (STO mission: "Relief Effort")
|Star clusters and nebulae in Star Trek Online|
|Alpha Quadrant||Betreka Nebula • Rolor Nebula • Zenas Expanse|
|Beta Quadrant||Afehirr Nebula • Arucanis Arm • Azlesa Expanse • Azure Nebula • B'Tran Cluster • Briar Patch • Celes Nebula • ChoS Nebula • D'kel Star Cluster • Delta Volanis Cluster • Eridan Belt • Eridon Nebula • Great Bloom • Hromi Cluster • Kahless Expanse • Khazan Cluster • Mutara Nebula • Paulson Nebula • T'Kanis Nebula • T'Ong Nebula • Yan Nebula|