Chart Components
Imum Coeli (IC)
Astrology meaning, traditional reading, and frequently asked questions.
Quick Definition
The lowest point of the chart — the cusp of the Fourth House; describes home, family, and inner foundation.
What Imum Coeli (IC) Means
The Imum Coeli — abbreviated IC, from Latin for “bottom of the sky” — is the lowest point of the chart, directly opposite the Midheaven. It marks the cusp of the Fourth House and describes home, family of origin, ancestry, and the inner emotional foundation. Astrologers read the IC as the private root of the chart — the place from which a person draws their sense of belonging and the part of life least visible to the outside world. Where the MC is public, the IC is private.
How to Spot Imum Coeli (IC) in Your Chart
The Imum Coeli (IC) is a calculated point in the natal chart, not a planet you can spot visually in the sky. Any chart drawn with accurate birth time, date, and place will show the Imum Coeli (IC) marked on the wheel — its position depends on the precise moment of birth.
Note the zodiac sign and degree where the Imum Coeli (IC) sits in your chart, and look for any planets making close aspects to it. Planets within a few degrees of the Imum Coeli (IC) colour its expression strongly and are read as the most active influences on the themes it represents.
Concrete Example
A person with the IC in Cancer is traditionally read as having a deeply emotional and family-oriented inner foundation — home and family of origin sit at the heart of who they are.
What Imum Coeli (IC) Traditionally Indicates
Traditional astrology treats the Imum Coeli (IC) as a sensitive point — a calculated location that, while not occupied by a physical planet, carries real symbolic weight in the chart. Hellenistic, medieval, and Renaissance astrologers all built techniques around the chart’s sensitive points.
Modern astrology continues this practice, with each era adding its own sensitive points — Chiron in the 1970s, Black Moon Lilith from the late 20th century onward, the lunar nodes treated more psychologically by modern karmic astrologers. The Imum Coeli (IC) is read traditionally as one of these meaningful non-planet points, with techniques both inherited and freshly developed.
Frequently Asked Questions
How is the IC pronounced?
Most English-speaking astrologers say each letter — “I-C.” The Latin Imum Coeli is pronounced roughly “EE-moom CHEH-lee.”
Is the IC always opposite the Midheaven?
Yes. The IC and MC are always exactly 180° apart, forming a single axis through the chart. If your MC is at 5° Aries, your IC is at 5° Libra.
What does a planet on the IC mean?
A planet conjunct the IC strongly colours the home life and inner emotional foundation. The Moon on the IC, for example, is traditionally read as a deeply nurturing or deeply needed home environment, depending on the rest of the chart.
Does the IC describe one parent specifically?
Traditions disagree. Some assign the father to the IC, others the mother. ReadMyPalms treats the IC as the inner emotional parent — whichever caregiver shaped your sense of home — rather than insisting on a specific parent.
Related Terms
Other glossary entries that connect to Imum Coeli (IC):
Ascendant
The zodiac degree rising on the eastern horizon at birth — your rising sign and the cusp of the First House.
Descendant
The zodiac degree setting on the western horizon at birth — the cusp of the Seventh House and the qualities you seek in partnership.
Midheaven (MC)
The highest point of the chart — the cusp of the Tenth House; describes career, public role, and life direction.
Fourth House
The house of home, family, ancestry, and the inner emotional foundation — beginning at the IC.
See Imum Coeli (IC) in Your Own Chart
Definitions are easier to internalise when you can see them in your own birth chart. Calculate yours free — it places every term on this page into the concrete geometry of your own life.