In my previous post on the subject I mentioned how I didn't have the eccentricity of the Earth's orbit quite right yet. I have pretty much corrected that. The old data set and the new are shown below the break.
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| Unperturbed System |
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| System with Perturbations |
In the initial model the eccentricity was constant at a period of around 100,000 years, I have maintained that periodicity but the magnitudes have now been adjusted. I accomplished this by introducing a perturbation to the calculations and it shows fairly good agreement with the work of others. At this point the mean annual insolation to Earth can now be readily calculated and will be shown in my next post on the subject.
These then are the data set I'll be using for the planetary motions of Earth. At some point I'll place the model for the motions in my downloads section.
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