The Sol System or Terran System is the name of the Solar System in the Age of the Imperium. The system is named for its sun, and is part of the Segmentum Solar. Its planets include Holy Terra and Mars.
Known Imperial Guard Regiments based in the Sol System include the Palatine Sentinels, Lucifer Blacks, Jupiter Storms, Auroran Rifles, Granite Myrmidons, Inferallti Hussars, Orion Watch, and potentially the Terran Praefects.
There are nine planets in the Sol system, some of which are also orbited by notable moons:
- Terra, and its moon, Luna
- Mars, and its moon - Phobos
- Saturn, its moon - Titan (and its sub-moon Deimos - previously moon of Mars)