Astrocartography — planet lines on the map
A natal chart is computed for one place. If you had been born somewhere else, the same planets would have stood in different houses — Sun on the Midheaven instead of in the second house, Moon on the Ascendant instead of below the horizon. Astrocartography draws the curves where each of those relocations would happen, projected onto a world map. You see at a glance where each planet is loudest.
Four lines per planet
For every natal planet the tool draws four curves: the MC line (where the planet sits at the top of the sky at your birth moment), the IC line (where it sits at the bottom), the Ascendant line (where it rises), and the Descendant line (where it sets). The MC line carries public visibility; IC roots the energy in private life; Ascendant shapes how others perceive you on arrival; Descendant draws partnerships and mirrors.
How a place reads
Going to a Sun-MC line means living somewhere recognition arrives whether you wanted it or not — visibility is the local weather. A Venus-Ascendant line softens first impressions; a Saturn-IC line makes home heavier and more disciplined. A place near a crossing of two lines carries both notes at once. The reading describes that local weather as state, never as guaranteed event.
Computation, not promise
All four lines come from Swiss Ephemeris using your exact birth time and location, projected through standard angular relocation formulas. We do not guess; we draw what relocation actually does. Whether a place feels right is yours to judge — the line is a structural fact, the experience belongs to you.
How astrocartography sits with the rest
Use the map after the natal chart, not before. The chart tells you who you are anywhere; the map tells you where each strand of who-you-are amplifies. A line near a city you already love often explains the love. A line over a city that drained you often explains the drain. Read alongside transits and the natal aspect table.
Frequently Asked Questions
Do I have to move to feel a line?
No. A short trip near a strong line is enough to feel its weather. Living for years in the band of a line builds the slower, structural version of the same theme. Both are real; the second is louder.
How wide is a line?
Practical effect is felt within roughly 700 km of a line on the map; the strongest band is the closest 100–200 km. A crossing of two lines acts as a point: smaller, sharper, with both planets present.
Are some lines bad to visit?
No line is bad in itself. A Saturn line concentrates work and limit; a Pluto line concentrates intensity and confrontation. Whether that fits your life right now is a separate question — the map names the colour, not the verdict.