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Ephemeris system

JPL Development Ephemeris

The series of numerically-integrated ephemerides, produced by NASA's Jet Propulsion Laboratory, that give the positions and velocities of the planets, the Moon, and the Sun to high precision over long spans. The DE ephemerides are the standard reference for precise Solar System calculations.

Highlights

  • The standard positions of the planets and Moon

Across celestial mechanics

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASA JPLJet Propulsion Laboratory / Solar System Dynamics

    Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.