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Project Description

This is the long-period ephemeris which is used by the Jet Propulsion Laboratory’s online HORIZONS service for dates far in the past or future.

Name:DE406 (May 1997)
Years:-3000 through 3000
Planets:Yes
Sun/Moon:Yes
Nutations:No
Librations:No
Report:Standish (1998) [PDF]
Size:190 MB

This ephemeris is like DE405 but covers a longer time period. To keep its files from being too large, its size was reduced by permitting up to 1 meter of interpolation error for the position of the Moon, and 25 meters for all other solar system bodies. Since DE405 itself is often only accurate to within a few kilometers for planetary positions, the difference was not important for many users. You can get much higher accuracy from the more recent long-term ephemeris DE422 but at the cost of three times the RAM and disk space.

To compute using this ephemeris in Python, see the jplephem package.

Release History

Release History

1997.1

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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1997

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
de406-1997.1.tar.gz (178.3 MB) Copy SHA256 Checksum SHA256 Source Jun 16, 2014

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