Campanus Topocentric Birth Chart Calculator

This calculator uses Campanus house system and topocentric coordinate system.

The Campanus house system, developed by 13th-century astrologer Giovanni Campano, divides the prime vertical (the circle passing through the east and west points) into twelve equal parts. It is favored by some astrologers for its unique spatial division approach.

The topocentric system calculates planetary positions relative to the observer's location on Earth's surface, rather than from Earth's center (geocentric). This results in slightly different positions, particularly for the Moon, and is preferred by some astrologers for its physical accuracy.

For more features including saving charts, transit charts, synastry charts, and more settings please use True Sky online astrology software.