Earth

Earth is the primary inhabited planet in the Solar System and is known to be the origin of all of metahumanity. By definition it orbits its star, Sol, with a period of 1 Terran year and a semimajor axis of 1 AU. Earth has a population of 12.5 billion, approximately 70% human, 12% orckish, 10% elven, and 8% dwarven.