Kerykeion is a Python library for astrological calculations and chart generation. It provides developers with the tools needed to incorporate astrology into applications, automate calculations and generate detailed astrological data.
The library accepts birth details or a specified date, time and location to calculate celestial positions and other astrological information. It separates calculations from chart rendering, allowing the resulting data to be processed independently of any graphical output.
Kerykeion is primarily a programming library rather than a conventional desktop application. An optional command-line interface provides access to its calculations directly from a Linux terminal.
This is free and open source software.
Key Features
- Generate natal, synastry, transit, composite, Davison, solar return and lunar return charts.
- Create SVG charts with modern and classic layouts, multiple colour themes and configurable visual elements.
- Support tropical and sidereal zodiac systems, multiple house systems and custom ayanamsa settings.
- Calculate planetary aspects, including conjunctions, oppositions, trines, squares and sextiles, with configurable orbs.
- Analyse applying and separating aspects, declination parallels, angularities and stelliums.
- Calculate secondary progressions, solar arc directions, primary directions and planetary returns.
- Support astrocartography calculations and relocated birth charts.
- Calculate lunar phases, eclipses, retrograde stations, zodiac sign ingresses and planetary hours.
- Include calculations for lunar nodes, fixed stars, asteroids, centaurs and selected trans-Neptunian objects.
- Provide geocentric, topocentric, heliocentric and barycentric calculation perspectives.
- Use libephemeris for astronomical calculations, with optional support for Swiss Ephemeris.
- Export structured data as JSON or XML and produce human-readable text reports.
- Perform calculations offline using supplied coordinates and timezone information, or use GeoNames for location lookup.
- Offer an optional command-line interface with saved subject profiles and text, JSON, XML and SVG output.
Website: github.com/g-battaglia/kerykeion
Support:
Developer: Giacomo Battaglia
License: GNU Affero General Public License v3.0
Kerykeion is written in Python. Learn Python with our recommended free books and free tutorials.
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