Interactive Astrology Calculator – Learn How Lagnam, Rasi, Navamsam & Vimshottari Dasha-Bhukti Are Computed

This page provides an educational visualization of how key elements of an Indian birth chart are computed from astronomical principles. The top-down heliocentric view shows the positions of the planets around the Sun, while an overlaid geocentric zodiac circle centered on Earth illustrates how planetary longitudes are measured from the Earth’s perspective. Using these geocentric positions, the page derives the Lagna (Ascendant), Rasi (D1) chart, Navamsa (D9) chart, Nakshatra, and the Vimshottari Dasha and Bhukti timelines. The accompanying tables list the calculated planetary longitudes and related parameters, allowing readers to understand both the visual representation and the mathematical basis behind each step of the chart construction.

Heliocentric Orbits + Planet Positions (IST dropdowns)

Uses Astronomy Engine (pure JS) to compute heliocentric vectors in Astronomy Engine (AU). Plot is a top-down view (x-y plane).

Planetary Positions (Heliocentric + Lahiri)