A house division method using spatial quadrants based on the prime vertical, dividing the celestial sphere into twelve equal sections.
Definition
The Campanus house system is a method of dividing the celestial sphere into twelve houses by projecting equal divisions of the prime vertical onto the ecliptic. Each house represents a 30° segment from the perspective of the observer. This system emphasizes spatial orientation around the observer, focusing on the horizon and meridian. Unlike quadrant systems like Placidus, Campanus uses the prime vertical to define house cusps, making it geometrically different but equally valid. It is particularly effective for analyzing personal perspective and subjective experience. However, it can produce distortions at extreme latitudes, where houses may become disproportionately sized.
In a chart
In a natal chart, Campanus houses are identified by their cusps, which are calculated using the prime vertical. Look for evenly spaced houses on the celestial sphere relative to the observer’s location. Note that discrepancies may appear near the poles, where houses might seem uneven or distorted compared to other systems.
Examples
- A chart with the Sun in the 10th house using Campanus, but in the 9th house using Placidus.
- A polar region chart where Campanus houses appear stretched compared to tropical latitudes.