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Loading contentThe 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.
Facts on this topic will be cited from these primary and reference sources.
Orbital data, ephemerides, and small-body parameters for planets, asteroids, and comets.