IC · Underfoot

The Mercury Imum Coeli Line

Places where the household runs on talk, and where the thinking gets done indoors rather than out in the world.

  • 2 real places named on this page
  • 2 settlements within 80 km of this line on three published charts
The Angle

What an Imum Coeli line is.

The bottom of the sky, directly beneath the Midheaven and on the far side of the Earth from it. It is the angle of private ground, and it governs home, family, property, roots, and the part of a life nobody is watching.

An Imum Coeli line is a meridian, and it is the exact opposite meridian to the same planet's Midheaven line: half a world apart, one straight stroke each.

Why Mercury on this angle in particular.

The Imum Coeli is private ground, and Mercury turns private ground into a workshop. Study, correspondence, siblings and the endless practical logistics of a house all get louder. It suits anyone whose real work happens inside their own home, and it is a noisy line for anyone who needs the house to be the quiet part of the day.

The Interpretation

What this line tends to support.

Our own entry for Mercury Imum Coeli, quoted exactly as the readings use it.

The house fills with talk. Books accumulate, people drop by unannounced, the kitchen table becomes an office, and the private hours are spent thinking rather than resting. This is good ground for working where you live and for finally understanding where you came from.

  • Home
  • Work and career
  • Creativity

What to watch for.

The mind will not switch off inside your own walls. Domestic life turns restless, moves happen more often than you planned, and family conversations circle the same old argument in slightly newer words.

Is this the line you are looking for?

Read this line when the decision is about a working home rather than a workplace: a study, a small business run out of a house, a household that has to hold two people's projects. It has nothing useful to say about public standing, and it is a warning worth taking seriously if what you actually need from a house is quiet.

Computed

Where this line actually runs.

A line meaning is easy to write and hard to check, so here is this one on three real charts. Cast any of them in software you trust and the lines should land where we say they do. The method, and what we do not claim, is here.

Albert Einstein

1879–1955 · Theoretical physicist · birth record

The meridian at 151.1° W.

  • Anchorage, United States67 km

One place in all: United States.

Frida Kahlo

1907–1954 · Painter · birth record

The meridian at 158.2° E.

  • Palikir, Federated States of Micronesiacapital3 km

One place in all: Federated States of Micronesia. 1 more withheld under the advisory.

Jimi Hendrix

1942–1970 · Guitarist and songwriter · birth record

The meridian at 96.1° E.

Nowhere in the gazetteer sits within 80 km of this line: no city of 100,000 people or more, and no national capital. That is a real answer rather than a missing one. This line spends its length over water, ice or ground nobody has built a city on.

Nearest first, kept 150 km apart so a list reads as a map. Countries on the US State Department Do Not Travel list are left out, checked 2026-07-26. Everything named is within 80 km, the tightest band we use; influence carries out to 805 km. The field guide has the bands in full.

How This Page Was Made

Which parts are measured, and which are craft.

The distances are measured. Each is the shortest great-circle distance from a real settlement to the exact curve of the line, computed against a committed public-domain gazetteer by the same engine that measures a paying customer's own.

The interpretation is a different kind of thing and we would rather say so than blur it. It is craft, written by hand in the tradition locational astrologers have refined since the nineteen seventies, and it describes what a place tends to support and to demand. It is not a prediction, and no line on any map decides what happens to a person.

Your Own Sky

Where does your Mercury Imum Coeli line run?

The free map draws all forty of your own lines across the world, with no email and nothing to buy.

Readings by Vela, our astrocartographer, from astronomy computed and checked before a word is written. For insight and reflection, never a verdict.