HX-3 is one of the twenty systems charted by Taisa Hanako while she commanded the YSS Elfin Princess in YE 30.

• Type M1 V Red Dwarf
• Radius 3.14 x 10⁵ km (0.45 x sol)
• Mass 8.53 x 10²⁹ kg (0.43 x sol)
• Temperature 3200 K
• Luminosity 1.89 x 10²⁵ W (0.05 x sol)

• Type Rock Planet
• Orbital Radius 2.16 x 10⁷ km (0.14 AU)
• Period 7.30 x 10² hours (0.08 earth years)
• Gravity 7.89 m/s² (0.81 x earth)
• Special Wreckage of a crashed starship

• Type Terrestrial World
• Orbital Radius 3.61 x 10⁷ km (0.24 AU)
• Period 1.58 x 10³ hours (0.18 earth years)
• Physics Small iron/silicate
• Hydrosphere 0 % water, 16 % ice
• Atmosphere Thin reducing
• Special Heavy volcanism, wreckage of a crashed starship