HX-1 I is a terrestrial planet in the HX-1 Star System. It has an atmosphere that is not breathable by humans but it does harbor some bacterial life.

The high levels of Iron and Titanium might make it a decent place to start a mining operation.

The planet was briefly scanned by the YSS Elfin Princess in YE 30, revealing the following statistical information:

• Type: Large ocean
• Radius: 8343.23 km (1.31 x earth)
• Surface Area: 8.75 x 10⁸ km²
• Land Area: 8.75 x 10⁷ km² (0.59 x earth)
• Mass: 1.23 x 10²⁵ kg (2.05 x earth)
• Density: 5.04 g/cm³ (0.91 x earth)
• Composition: 35.2% iron, 31.5% oxygen, 26.0% silicon, 4.7% titanium, 2.6% other metals, 0.1% other elements

• Gravity: 11.70 m/s² (1.20 x earth)
• Escape Velocity: 13.97 km/s
• Rotation:
• Period: 57.87 hours
• Axis Tilt: 3.61 °

• Water: 91 %
• Ice: 23 %

• Type: Dense reducing
• Pressure: 172.62 kPa (1.70 x earth)
• Composition: 68.7% argon, 28.1% methane, 3.2% carbon dioxide, trace other gases

• Type: Cool
• Min Temp: 258 K (-14 °C)
• Avg Temp: 290 K (17 °C)
• Max Temp: 294 K (21 °C)

• Chemistry: Carbon
• Lifeforms: Prokaryotic microbes