What is the I.C. (Nadir)? Rooting in the 12 Signs

The lowest point of your birth chart — the I.C. or its Latin name Imum Coeli (IC), commonly known as “Nadir” — is an inner angular point that shows your roots, family heritage, and deepest security needs. While the MC indicates your outward goals, the IC reflects the inner foundation on which those goals are based.

What is the IC Exactly?

The IC is the starting degree of the 4th house and is one of the four main angular points of the chart. Although the word “Nadir” carries a negative connotation in everyday language, in astrology it does not mean “the worst point” — on the contrary, it is a power point that shows the material and emotional foundation of your life and how your feet are planted on the ground. Some astrologers define the IC as the “psychological womb”: a small but profoundly deep space where personal integration occurs.

12 Different Rooting Styles According to the IC Sign

• IC Aries: Roots in individuality; feels safe when on their own.
• IC Taurus: Roots in material security; feels safe in stability.
• IC Gemini: Roots in understanding; feels safe in change.
• IC Cancer: Roots in a safe home; feels safe in emotions.
• IC Leo: Roots in the heart; feels safe when feeling special.
• IC Virgo: Roots in order; feels safe within set boundaries.
• IC Libra: Roots in relationships; feels safe in partnerships.
• IC Scorpio: Roots in depth; feels safe regardless of trauma.
• IC Sagittarius: Roots in freedom; feels safe while exploring.
• IC Capricorn: Roots in tradition; feels safe in society.
• IC Aquarius: Roots in liberation; feels safe in equality.
• IC Pisces: Roots in wholeness; feels safe in the spiritual/psychic realm.

Finding the IC in Your Chart: Where to Look?

• Contents and planets of the 4th house: Shows the quality of your home/family life and your inner “home” psychology.
• Angular planets close to the IC: A planet that coalesces with the IC (especially powerful ones like Pluto) can deeply transform the foundational areas of your life.
• Integrity of the MC-IC axis: This vertical axis is entirely personal — it narrates where you come from (IC) and where you are headed (MC).
• Nuance of parental influence: Although the IC-MC axis is an extension of the 4th and 10th houses (parental themes), it is not identical — the IC can be read more as symbolizing the “fatherly/hidden” influence, while the MC represents the “maternal/visible” socialization influence.

IC: The Midnight Point, Source of New Beginnings

In traditional astrology, the IC is viewed as the midnight point where the “Sun dies and is reborn” — it symbolizes the end of a matter and simultaneously the seed of a new beginning. Thus, the IC points not only to the past (roots) but also indicates which inner source you will draw strength from to move forward.

How to Use the IC in Practice?

Examining your IC sign and any planets there (if applicable) will help you understand “what truly makes you feel secure” — this allows you to distinguish whether your career goals (MC) are based on a healthy foundation or an escape rooted in insecurity. Evaluating the IC alongside the 4th house interpretation and the overall structure of your birth chart gives the most accurate result.