Jupiter lines
The four lines on your map where Jupiter was on an angle when you were born: overhead, underfoot, rising and setting.
Jupiter in astrocartography
Jupiter was the greater benefic of the old texts, the planet of generosity, faith, learning, law and long travel, and of the knack of being trusted by people who could help you. Most people hope to find one of its lines running under a city they already like. Each of the four sends that expansiveness somewhere particular. The MC puts it into work and public standing, the IC into the house, the family and the land, the Ascendant into your own manner and appetite, and the Descendant into the partners, mentors and allies who turn up.
Too much is the risk with Jupiter. Plans get bigger than the hours in the week, promises bigger than anyone can deliver, and comfort bigger than the reason you came. Astrocartography doesn't read a Jupiter line as money or luck on demand; it reads it as a place where things are easier to start and easier to overdo. How much the line gives depends on Jupiter at birth: in Sagittarius, Pisces or Cancer, or well aspected, it has more to give than in Gemini, Virgo or Capricorn, or caught in a hard square to Saturn.
Jupiter MC line: expansion and opportunity
Jupiter overhead is the classic line for success in the world: promotions, publishing, teaching, law, travel businesses and anything that grows by reputation. Opportunities arrive with less struggle, people extend trust, and optimism is rewarded.
Jupiter IC line: abundance at home
With Jupiter beneath you, the private life expands. Larger homes, generous family, a sense of being provided for, and often property or land that appreciates.
Jupiter ASC line: confidence and growth
Jupiter rising enlarges you: more optimism, more generosity, more appetite, and a reputation for being lucky and open-handed. People meet you as someone worth helping.
Jupiter DSC line: generous others
Jupiter setting brings partners, mentors and allies who open doors. Relationships here tend to be expansive, encouraging and often connected to other cultures or to teaching.
Where the lines run
Jupiter's declination, how far north or south of the celestial equator it sits, decides where its rising and setting lines stop: at 90° of latitude minus the declination. For births between 1930 and 2025 it ran from 23.5° S to 23.5° N, so in some charts those lines end as close to the equator as about 67° of latitude, north or south. Beyond that point Jupiter didn't rise or set at all on the day you were born, while the MC and IC lines carry on to the poles.