The Xylar system is notable for having a planet entirely covered in Water. It is neutral and is not claimed by any nation. Its neutral status is protected by the Yamatai Star Empire.

It was held by the Nerimian Defense Initiative until YE 31 when it was captured by the NMX. In YE 33 the system was selected for liberation by the Seventh Fleet of the Star Army of Yamatai as part of their first active campaign in the Second Mishhuvurthyar War. In YE 34, the planet was liberated successfully by Yamatai.

In YE 43, Pisces Station was relocated to Xylar to serve as an international commerce and diplomacy hub.

• Type K9 IV Orange Subgiant
• Radius 1.70 x 10⁶ km (2.44 x sol)
• Mass 1.84 x 10³⁰ kg (0.93 x sol)
• Temperature 3600 K
• Luminosity 4.31 x 10²⁷ W (11.26 x sol)

• Type Rock Planet
• Orbital Radius 2.16 x 10⁸ km (1.44 AU)
• Period 1.58 x 10⁴ hours (1.80 earth years)
• Gravity 15.46 m/s² (1.58 x earth)

• Type Asteroid Belt
• Orbital Radius 3.44 x 10⁸ km (2.30 AU)
• Period 3.17 x 10⁴ hours (3.62 earth years)

• Type Water World
• Orbital Radius 4.70 x 10⁸ km (3.14 AU)
• Period 5.06 x 10⁴ hours (5.79 earth years)
• Gravity 18.69 m/s² (1.91 x earth)
• Hydrosphere 88 % water, 12 % ice
• Atmosphere Dense reducing
• Biosphere Prokaryotic microbes

• Type Rock Planet
• Orbital Radius 6.89 x 10⁸ km (4.61 AU)
• Period 8.98 x 10⁴ hours (10.27 earth years)
• Gravity 7.23 m/s² (0.74 x earth)

• Type Rock Planet
• Orbital Radius 1.31 x 10⁹ km (8.73 AU)
• Period 2.34 x 10⁵ hours (26.79 earth years)
• Gravity 6.22 m/s² (0.64 x earth)
• Special Large moon, trace atmosphere

• Type Rock Planet
• Orbital Radius 2.12 x 10⁹ km(14.14 AU)
• Period 4.83 x 10⁵ hours(55.25 earth years)
• Gravity 12.07 m/s²(1.23 x earth)
• Special Heavy radiation

• Type Asteroid Belt
• Orbital Radius 1.63 x 10^10 km (108.66 AU)
• Period 1.03 x 10⁷ hours (1177.19 earth years)

• Type Ice Planet
• Orbital Radius 7.02 x 10^10 km (469.34 AU)
• Period 1.29 x 10⁶ hours (147.99 earth years)
• Gravity 10.54 m/s² (1.08 x earth)
• Special Methane seas