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Jpl de405

Jpl de405

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JPL PLANETARY AND LUNAR EPHEMERIDES: Export Information [30 April ] . ). DE Created May ; includes both nutations and librations. The name Jet Propulsion Laboratory Development Ephemeris (followed by a number), the The JPL ephemerides prior to DE were integrated on a Univac mainframe in double precision. For instance, DE, which was created in ,  History - Distribution - Applications - Ephemerides in the series. The JPL planetary ephemerides are saved as files of Chebyshev polynomials fit to the Cartesian positions and velocities of the planets, Sun.

JPL Planetary and Lunar Ephemeris DE for the jplephem package. JPL DE versions: The ephemerides have gone through three "series": the DE Created May ; includes both nutations and librations. The JPL Solar System Ephemeris specifies the past and future . DE is a good choice so select the 'de' ascii directory on the FTP web.

It is possible to use JPL's DE/ ephemerides with Celestia to compute the positions of the planets more accurately than the default VSOP87 theory does. The JPL Planetary and Lunar Ephemerides on CD-ROM contains three different Jet Propulsion Laboratory Planetary and Lunar Ephemerides (DE, DE to the DE ephemerides, which is currently used in The Astronomical Almanac . files are available by ftp2 from the Solar System Dynamics group at JPL.

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