HX-9 I is a Mars-like planet in the HX-9 System notable for its highly toxic atmosphere and extremely high metal content. HX-9 I has one large moon.

The world is known to hold a rich treasure of metals in its core, in a mantle of uranium and Thorium with traces of Nickel, Cobalt, Chromium, Zinc, Molybdenum, Vanadium, and Manganese, and for a thin crust of Nickel, Zinc, and Molybdenum with trace concentrations of Gold and Silver. Some of the higher-level ores have been mined, and the low-level ores are still available.

• Type Large iron/silicate
• Radius 7883.95 km (1.24 x earth)
• Surface Area 7.81 x 10^8 km²
• Land Area 7.89 x 10^8 km² (5.30 x earth)
• Mass 1.24 x 10^25 kg (2.08 x earth)
• Density 6.04 g/cm³ (1.10 x earth)
• Composition 50.0% iron, 19.0% oxygen, 17.6% silicon, 8.3% titanium, 5.1% other metals, trace other elements

• Gravity 13.26 m/s2 (1.36 x earth)
• Escape Velocity 14.46 km/s
• Rotation
• Period 33.03 hours
• Axis Tilt 57.48 °

• Water 0 %
• Ice 4 %

• Type Dense toxic
• Pressure 167.92 kPa (1.66 x earth)
• Composition 81.7% sulfur dioxide, 18.3% nitrogen, trace other gases

• Type Standard
• Min Temp 263 K (-10 °C)
• Avg Temp 298 K (25 °C)
• Max Temp 355 K (82 °C)

• Large moon