UX-8 I is a habitable ocean world in the UX-8 system. There is native microbial life in the water.

In YE 36, this planet became part of the PAINT public transportation system and has a Tenba that regularly visits and provides passenger flights to Shinjuku Starport on Hanako's World.

• Type Standard ocean
• Radius 6845.56 km (1.07 x earth)
• Surface Area 5.89 x 10⁸ km²
• Land Area 1.77 x 10⁷ km² (0.12 x earth)
• Mass 7.13 x 10²⁴ kg (1.19 x earth)
• Density 5.31 g/cm³ (0.96 x earth)
• Composition 31.1% iron, 28.0% oxygen, 16.2% silicon, 9.4% titanium, 7.7% sulphur, 7.5% other metals, 0.1% other elements

• Gravity 10.11 m/s² (1.03 x earth)
• Escape Velocity 11.77 km/s

• Period 26.37 hours
• Axis Tilt 40.54 °

• Water 98 %
• Ice 22 %

• Type Thin breathable
• Pressure 51.08 kPa (0.50 x earth)
• Composition 80.5% argon, 19.5% oxygen, trace other gases

• Min Temp 196 K (-76 °C, -104.8 °F)
• Avg Temp 292 K (19 °C, 66.2 °F)
• Max Temp 322 K (48.9 °C, 120°F)

• Chemistry Carbon
• Lifeforms Prokaryotic microbes

• 5 small moons, heavy radiation