The Belderone system is the first extra-Tion Cluster system to be considered and recognized as sovereign territory of the Tion Hegemony and her affiliates. The system is the political and economic capital of the Belderone sector and is comprised of two planets, Kulthis and Belderone Prime and the two satellites Belderone Aurek and Belderone Besh.

The system was registered with the Galactic Cartographers Association on Day 116 of Year 15, after Tionese scout Octogo Kunn made planetfall on Belderone Prime. The locals on both worlds were receptive to a Tionese delegation, lead by High Councillor Crislyn Anessa Waryn. Within a standard week of the ratification of the Stenax Accords, the citizens of the system were designated and granted status as official Tionese and their system, planets and sector gained galactic-wide recognition as being under the protection of the Tion Hegemony.