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Jet Propulsion Laboratory Development Ephemeris.
ephemeris produced at the Jet Propulsion Laboratory for spacecraft navigation and astronomy
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About Jet Propulsion Laboratory Development Ephemeris
Jet Propulsion Laboratory Development Ephemeris designates one of a series of mathematical models of the Solar System produced at the Jet Propulsion Laboratory in Pasadena, California, for use in spacecraft navigation and astronomy. The models consist of numeric representations of positions, velocities and accelerations of major Solar System bodies, tabulated at equally spaced intervals of time, covering a specified span of years. Barycentric rectangular coordinates of the Sun, eight major planets and Pluto, and geocentric coordinates of the Moon are tabulated.
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