One of the UX Series Star Systems, UX-8 is notable for its ocean planet, UX-8 I. In YE 35, the Yamatai Star Empire laid claim to this star system. The Yamatai Star Empire placed orbital communications networks of Emrys Satellites around all of the terrestrial planets in YE 36.

In YE 41, this star system was conquered by forces from the Interstellar Kingdom Of Kuvexia during the Kuvexian Invasion of YE 41.

• M0 V Red Dwarf
• Radius 3.03 x 10⁵ km (0.44 x sol)
• Mass 7.69 x 10²⁹ kg (0.39 x sol)
• Temperature 3300 K
• Luminosity 1.29 x 10²⁵ W (0.03 x sol)

• Terrestrial World
• Orbital Radius 2.48 x 10⁷ km (0.17 AU)
• Period 9.48 x 10² hours (0.11 earth years)
• Physics Standard ocean
• Gravity 10.11 m/s² (1.03 x earth)
• Hydrosphere 98 % water, 22 % ice
• Atmosphere Thin breathable
• Biosphere Prokaryotic microbes
• 5 small moons, heavy radiation

In YE 34 the Scientific Studies Service (SSS) deployed a Ke-P6-01a Bisen Lighthouse on the surface of the planet at the request of the Star Army of Yamatai.

• Rock Planet
• Orbital Radius 5.22 x 10⁷ km (0.35 AU)
• Period 2.90 x 10³ hours (0.33 earth years)
• Gravity 1.46 m/s² (0.15 x earth)
• Trace atmosphere

• Rock Planet
• Orbital Radius 7.72 x 10⁷ km (0.52 AU)
• Period 5.21 x 10³ hours (0.60 earth years)
• Gravity 13.72 m/s² (1.40 x earth)

• Rock Planet
• Orbital Radius 1.32 x 10⁸ km (0.88 AU)
• Period 1.16 x 10⁴ hours (1.33 earth years)
• Gravity 13.90 m/s² (1.42 x earth)