Latest version is attached. It is *very* close, but the Earth is off by 
about one month's worth of travel.

Here is the document I am using as a guide:

https://ssd.jpl.nasa.gov/txt/aprx_pos_planets.pdf

And I am using this website to compare my render to:

https://in-the-sky.org/solarsystem.php

Set it to JD 2458376.5, which is equivalent to A.D. 2018 Sep 15.

I am not sure where my calculations have gone wrong.


Mike

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