insights · Places · Astrocartography
What Is Astrocartography?
You already know places change you. Astrocartography is one old, oddly specific attempt to say how: city by city, line by line.
by Catherine Mallette, founder
What Is Astrocartography?
the short answer
Astrocartography is a branch of astrology that projects your birth chart onto a map of the world. Instead of asking what the sky looked like when you were born, it asks where on Earth each planet would have been rising, setting, or directly overhead at that same moment, and draws a line through every place where that's true.
The result is a personal world map crossed by planetary lines. The claim is that living on or near a line brings that planet's themes forward in your life: a Venus line and relationships or beauty, a Saturn line and discipline or tests, a Moon line and feeling, memory, home.
It was systematized by the American astrologer Jim Lewis in the 1970s, and it isn't science. There's no evidence the lines cause anything. What it offers is a structured way to take a question you already carry (why did that city undo me, where might I belong) and look at it from an unfamiliar angle.
The Idea
Your chart is a moment. Astrocartography asks where.
A birth chart is a snapshot of the sky from one point on Earth at one moment in time. Move the observer, and the same sky rearranges: a planet that was overhead in one city was rising in another and setting in a third.
Astrocartography simply runs that thought experiment everywhere at once. For each planet, it draws lines through all the places where that planet would have sat on one of the chart's four angles (the horizon and the meridian) at the moment you were born.
The intuition underneath is one people arrive at without any astrology: you are not the same person in every city. Lisbon meets a different version of you than New York does. Astrocartography is an attempt to give that intuition a map.
The Mechanics
Planets, angles, and roughly forty lines
Each planet gets four lines, one for each angle: rising (AC), setting (DC), culminating overhead (MC), and its opposite point beneath you (IC). Ten planets, four angles: about forty lines wrapping the globe.
The planet names the theme; the angle names the arena. A Sun MC line runs through places where your visibility and work are said to intensify. A Moon IC line runs through places that are supposed to feel, for better or worse, like home.
Nearness matters in practice: readers treat a line as strongest within a few hundred miles, fading with distance. Most places you'll ever consider living sit near at least one line, which is part of why the map always has something to say.
What It's For
How people actually use it
Some people consult the map before a move, the way you'd consult one more friend with a strong opinion. Others use it backwards: locating the cities that already marked them, and noticing what the map claims about those places.
The backwards direction is quietly the more interesting one. You have real data there: the city where everything accelerated, the one where you couldn't sleep, the one you still miss. Holding your lived history against the map turns it from prophecy into prompt.
Either way, the useful output isn't an instruction. It's a sharper question: what did that place ask of me, and is that what I want to be asked again?
The Honest Part
It isn't science. So what is it?
There is no mechanism by which a planet's position at your birth shapes your experience of Berlin, and no controlled study showing the lines predict anything. If someone sells you certainty off this map, hold onto your wallet.
What the map does do, and this is not nothing, is force specificity. "Where should I live?" is too big a question to think clearly about. "Why did the two best years of my life happen in a city I chose by accident?" is not. A strange old lens can make you look longer than common sense would.
That's the spirit worth keeping: astrocartography as one voice among several, alongside your history, your attachments, your work, and the chapter you're actually in, never the deciding vote.
common questions
Frequently asked
Is astrocartography scientifically proven?
No. There's no evidence that planetary lines cause or predict anything about your life in a location. Its value, for people who find it valuable, is reflective: it's a structured, specific way to examine how places have actually felt to you and what you want from the next one.
Who invented astrocartography?
The technique of mapping a birth chart onto world geography was systematized and popularized by the American astrologer Jim Lewis in the 1970s under the name Astro*Carto*Graphy. The underlying idea, relocating a chart to a new place, is older, and is known more broadly as relocation astrology.
What's the difference between astrocartography and relocation astrology?
Relocation astrology recalculates your whole birth chart for one specific place, as if you'd been born there. Astrocartography shows all places at once, as lines on a world map. The map is the overview; a relocated chart is the close-up.
make it personal
What would your map say?
Vesper draws your astrocartography lines and reads them alongside who you are, your relationships, and the chapter you're in: a lens on place, held up to an actual life.