Swiss Ephemeris Planetary Positions: Daily Tables 1900-2100

What Are Ephemerides?

Our ephemeris pages publish daily planetary positions for the Sun, Moon, Mercury through Pluto, the Mean and True lunar nodes, and the four major asteroids Ceres, Pallas, Juno and Vesta. Every coordinate is rendered through the Swiss Ephemeris library maintained by Dieter Koch and Alois Treindl at Astrodienst, the same engine trusted by tens of thousands of practitioners worldwide. Tropical longitudes are computed against NASA JPL DE441, the lunar and planetary ephemeris distributed by the Jet Propulsion Laboratory, with residuals smaller than ±0.001 arcsecond when compared to JPL Horizons reference output. The tables span 1900 to 2100, which covers nearly every birth chart and forecasting window an astrologer will encounter. Each row carries a retrograde flag alongside the longitude, latitude and declination for every body, so a full year of direction changes can be scanned without opening a chart wheel for every single day — the CSV export below carries the same columns for offline work.