Astrocartography is relocation astrology drawn as a map. It takes your natal planets and shows the places on Earth where those planets would have been rising, setting, culminating, or on the IC at the moment of your birth. The result is a set of lines across continents, each labeled with a planet and an angle.
The map is geometrically neat. The interpretation is where people get themselves into trouble. A Venus line is not a guarantee of love in Lisbon. A Saturn line is not a curse on a job offer in Chicago. The map describes where a natal function would have been angular — louder in the chart’s architecture — if you had been born there. Living there later is a different claim.
This page sits under what is a birth chart and Western astrology.
What the Lines Actually Are
At your birth moment, each planet had an azimuth and altitude relative to every point on Earth. There is a meridian where that planet was on the Midheaven, a meridian where it was on the IC, and loci where it was on the ascendant or descendant. Jim Lewis popularized the modern line-map in the late twentieth century. The math is older: it is a relocated natal chart, sampled continuously.
A relocated chart is the simpler sibling. You keep your birth time in Universal Time and redraw the houses for a new latitude and longitude. Move from New York to Denver and the rising sign can change. The planets stay in the same signs and keep the same aspects. Only the angles and houses rotate.
Astrocartography is a way of seeing, at a glance, where each planet would sit on those angles. If you can read a relocated chart, you do not strictly need the colorful map. The map is a finding aid.
You need a trustworthy birth time. Without one, the angles are fiction. See astrology without a birth time.
How People Usually Read the Lines
Common shorthand — useful as a first cut, dangerous as a moving plan:
- Sun line: visibility, heat, the identity project in public.
- Moon line: habit, need, the private climate, sometimes family weather.
- Mercury line: talk, errands, the mind as the local industry.
- Venus line: ease, taste, social glue — and the temptation to confuse pleasant with good.
- Mars line: effort, conflict, libido, speed.
- Jupiter line: permission, inflation, the big yes.
- Saturn line: form, delay, craft, thinner margins.
- Outer-planet lines: generational weather made local. Easy to over-write.
MC lines (Midheaven) lean toward public role. ASC lines lean toward body and approach. DSC lines lean toward “the other.” IC lines lean toward home base. The Midheaven guide is the vocabulary for the public angle.
If you already know your natal Mars is a sensitive point, a Mars-ASC line is not a surprise. It is the same function with a microphone in that location.
What the Map Cannot Do
It cannot rank cities for happiness. It cannot tell you where you will “find your person.” It cannot override visa law, rent, language, or the job that actually exists.
It also cannot be tested the way people think. You visit a Venus line for a weekend and have a good dinner. You visit a Saturn line and miss a train. Both stories will be remembered as confirmation. That is the self-fulfilling prophecy problem with a suitcase.
A fairer check: live somewhere for a year for reasons that are not the map. Then ask whether the relocated angles describe anything you would have said in ordinary language. If not, the map is décor.
A Conservative Way to Use It
- Only open the map after you can describe your natal chart without it.
- Use it to explain a place you already have feelings about — childhood city, current city, a place you keep almost moving to.
- Cast the relocated chart for that city, not just the pretty line.
- Read one angular planet, not twelve lines.
- Let non-astrological constraints win. Always.
If you are deciding whether to move, the adult inputs are work, money, health, people, and legal status. The map can supply a metaphor after those are honest.
Parans and “In Mundo” Extras
Some software adds parans: places where two planets culminate at the same time in the local sky, even if they are not in zodiacal aspect. This multiplies lines. Beginners should ignore parans. If you cannot yet read a relocated Moon on the IC, a paran is trivia.
Distant lines also get “orbs” on the map — a few hundred kilometers of influence. Those bands are conventions. Standing 80 kilometers off a Venus line is not a different fate from standing on it. If you need that level of precision, you are shopping.
Transits, Returns, and Travel
A transit happens everywhere. Saturn conjunct natal Sun is a season, not a city. Relocation changes which houses a transit occupies in the local chart. That is a subtle extra, not a way to escape a transit by flying.
A solar return can be relocated too. Stacking relocated returns on astrocartography on transits is how people generate an answer for every possible move. Pick one technique.
Frequently Asked Questions
Is astrocartography the same as locational astrology? Locational astrology is the broader craft (relocated charts, local space, astrocartography maps). Astrocartography usually means the planetary-line map.
Can a line run through the ocean? Yes. Most of the Earth is water. A line’s existence is not a recommendation to book a cruise.
What if two lines cross in a city? Then two natal functions would have been angular there. That is complexity, not a jackpot.
Do I need this for a daily reading? No. Daily work uses the natal chart and transits. Relocation is optional geography.