Built for astrological research, Cygnus is a high-precision desktop application for generating ephemerides. It computes planetary positions across any date range, delivering publication-grade tabular data you can trust for serious work.
Choose from multiple calculation perspectives including geocentric, heliocentric, and topocentric viewpoints, each available in standard and aspect variants, giving you the flexibility to approach your research from exactly the angle you need.
Take Cygnus for a test-drive and see if it's the right fit for you. A 15-day trial license will be automatically created when the application is installed for the first time.
Download for Windows 11 (x64) Download for macOS (M-Series)Cygnus provides six distinct study types to cover every aspect of ephemeris research. Generate standard geocentric, topocentric, and heliocentric ephemerides, or switch to their aspect variants to compute angular relationships between celestial bodies from each perspective.
Tailor every study to your exact requirements. Define custom date ranges and time intervals, select from a comprehensive list of celestial bodies, choose between tropical and sidereal zodiac systems, and configure reference planes to produce the precise data your research demands.
Explore your ephemeris data in a professional tabular display designed for serious research. Control displayed metrics, resize and reorder columns to suit your workflow, search by date to jump to any point in time, and monitor record counts to stay oriented within large datasets.
Take your data wherever it needs to go. Export complete studies to CSV files for use in spreadsheets and external analysis tools, or copy selections to the clipboard as formatted Markdown tables or tab-delimited text for seamless integration into your documentation workflow.
Accelerate your workflow with a comprehensive preset system. Save and apply ephemeris presets and body list presets to instantly configure new studies with your preferred settings, and set application defaults so every new study starts exactly the way you want.
Organize your ephemeris studies within workspace files for clean, structured research. Activity indicators keep you informed of running calculations, and unsaved changes protection ensures you never lose work. Navigate, reorder, copy, and manage studies with ease.
Ephy, our free ephemeris generator, covers standard geocentric, topocentric, and heliocentric ephemerides with time steps down to one hour. Download it free, keep it forever, and step up to Cygnus when your research calls for finer resolution and aspect ephemerides.
Pay once and own forever. Every purchase is backed by a 15-day, no-questions-asked money-back guarantee, and you will be up and running in a matter of minutes thanks to our automated licensing system.
Everything in Ephy, plus additional ephemeris types and time steps down to one second.
Aquila, Compass, and Cygnus in one bundle—the complete toolkit at its best price.