This is the 8th in a series of caches based on the Solar System. Solar System #8 Uranus is the 7th planet from the Sun (Solar System #1), 2.7km from the 1st cache, 2,877,000,000 km in reality. The remaining 7 (Venus, Mercury, Earth, Mars, Jupiter, Saturn & Neptune) are placed at increasing intervals from 'The Sun' on theoretical orbits i.e not linear but at increasing distances in differing directions.