The Imum Coeli (often abbreviated as IC, from the Latin Imum Coeli, meaning “bottom of the sky”) is a crucial point in an astrological chart, representing the lowest point on the ecliptic relative to the observer’s location. It is directly opposite the Midheaven (MC) and marks the cusp of the 4th house in the natal chart. Key Aspects of the Imum Coeli (IC): In summary, the Imum Coeli (IC) in astrology represents the deepest aspects of one’s personal life, including their home environment, family background, and emotional foundation. It provides insight into how these factors shape one’s inner world and influence their private life.