Astrocartography projects planetary angular positions from a birth chart onto a world map. Lines indicate locations where a natal planet would fall near an angle—rising, setting, culminating or anti-culminating—at the chart’s reference moment. The technique is used symbolically to compare places rather than to determine objectively where someone must live.
What planetary lines represent
Sun lines may be interpreted in terms of visibility and identity, Moon lines as connection and familiarity, Venus lines as aesthetics or relationships, and Saturn lines as responsibility and limits. The angle matters: a planet on the Midheaven is read differently from the same planet on the Descendant. Interpretations are most useful when tied to the person’s natal chart.
How a map is calculated and read
Correct birth time is essential because angular positions change continuously. Map software draws curves for planetary angles across Earth. Readers can compare a location’s proximity to a line and cast a relocated natal chart for the same planetary moment but a different place. Proximity is not a guarantee of outcomes; a strong natal planet may be experienced differently in different house contexts.
Relocation and decision-making
A relocation chart reorients houses and angles while preserving the planetary zodiacal positions of birth. It complements astrocartography but is not identical to it. Practical decisions about moving require employment, family, legal and financial considerations; a map of astrological lines does not replace those factors.
Return to Birth Charts & Natal Astrology to place this subject within the larger interpretive framework.