Horizon housesThe horizon house system divides the sky according to the four cardinal directions. The cusp of the 1st house is exactly due East, the 10th is exactly due South. The celestial sphere is divided into 12 segments, like an orange (similar to the Campanus and Meridian system), with the axis of the orange running through the Zenith and Nadir, and its 'equator' resting on the horizon. The house cusps result from the intersections of the twelve segments with the ecliptic. In the horizon house system, the 10th house cusp is identical with the MC, but the 1st house cusp is not identical with the Ascendant. |