This is the most recent long-period ephemeris published by the Jet Propulsion Laboratory. While requiring more than half a gigabyte of space, it achieves quite high accuracy.
| Name: | DE422 (September 2009) |
|---|---|
| Years: | -3000 through 3000 |
| Planets: | Yes |
| Sun/Moon: | Yes |
| Nutations: | Yes |
| Librations: | Yes |
| Report: | Jones, Fomalont, Dhawan, Romney, Folkner, Lanyi, Border, Jacobson (2010) [PDF] |
| Size: | 531 MB |
This ephemeris incorporates ranging data from recent spacecraft missions, including the Cassini mission to Saturn, which results in an accuracy for Saturn of a few milliarcseconds for positions over the past decade. If this ephemeris is too large for your application, take a look at DE421 and DE423 as alternatives.
To compute using this ephemeris in Python, see the jplephem package.
TODO: Figure out how to actually get changelog content.
Changelog content for this version goes here.
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TODO: Figure out how to actually get changelog content.
Changelog content for this version goes here.
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Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
| File Name & Checksum SHA256 Checksum Help | Version | File Type | Upload Date |
|---|---|---|---|
| de422-2009.1.tar.gz (545.3 MB) Copy SHA256 Checksum SHA256 | – | Source | Jun 16, 2014 |
