Astrool Imum Coeli (IC)
The point directly beneath your feet at birth: the base of the chart, describing home, family, roots and the private self.
Definition
The Imum Coeli (Latin for "bottom of the sky") is where the ecliptic crosses the meridian below the horizon. It is opposite the Midheaven and forms the cusp of the 4th house in quadrant systems.
What it describes
Where you come from and where you retreat to: family patterns, the home you grew up in and the one you build, ancestry, emotional foundations and, traditionally, the end of life. Planets near the IC work privately and powerfully.
IC lines
On an astrocartography map, IC lines mark places where a planet was underfoot at your birth. They are read for home, family and putting down roots.
See it in your own chart
Astrool calculates your full birth chart, not just your sun sign, and writes your daily, weekly and monthly readings against it.
Common questions
What is the IC in astrology?
The lowest angle of the chart, opposite the Midheaven, describing home, roots and family.
Is the IC the same as the 4th house?
In quadrant house systems the IC is the 4th house cusp. In whole-sign houses it can fall in a different house.