Thirteenth century astrologer and mathematician who devised the house system that bears his name, which divides the prime vertical into equal 30° arcs.

Thirteenth century mathematician and astrologer who devised the Campanus House System.

A system of houses based on equal twelvefold division of the prime vertical, as opposed to the ecliptic. In the 13th century Campanus, a mathematician, popularised this system in the West, but it was used by Al-Biruni in the 11th century as 'the system of Hermes', suggesting a much earlier origin, perhaps dating back to Manilius.

Campanus is a lunar impact crater that is located on the southwestern edge of Mare Nubium. It forms a crater pair with Mercator crater just to the southeast. Along the southern of Campanus is the small lunar mare named Palus Epidemiarum.