I began building this algorithm I calibrated it to measure
the precession of aphelion,
reckoning that later versions would calibrate Perihelion Precession
when the software was more mature, and perhaps the computer
itself would be faster, and the results would then be more
accurate. However, the newer 4-core Windows
10 computers run these particular processes
10x slower than the older XP 2-core
That is why I inadvertently have results most accurate for
precession of aphelion. I wanted to measure both just to carefully
monitor any potential anomalies between the two. The applications
in 2D and 3D free to download,
are all calibrated for Perihelion Precession, and if you want
the most accurate results yourself, then you can run them
yourself and monitor them for optimal accuracy.
So even though the orbit-gravity-sim-15.exe
algorithm offers Scenario 
as a solution to the precession of the orbit of Venus,
I have to concede that my current processing power would take
about 10 days to achieve results with an
error-margin larger than the amount in question.
I would likely need to run Scenario 
of OGS15 for
about 3 months for a fair result. I am currently
running a lengthy sample of Scenario 
which after over 2000 orbits
yields no satisfactory result, then average Perihelion is
still fluctuating ether side of zero even at optimal orbit
counts. I will post updates if I ever get them.
But currently (2020 February), I only have
1.5 GHz of processing power which is diluted
to 10% via the atrocity of modern '4-core'
processing combined with lazy old Windows 10.
When I started this process I had no way of knowing in advance
what future operating systems were going to be doing, and
I still feel fairly let-down by the system.
Perhaps future versions of Windows will be able to utilize
the sequential code more effectively, and use all the processing
'power'. If you, the reader, have a faster computer, then
you could likely squeeze her parameters more effectively than
I can. But its a fairly moot point for Venus because observational
time-frames would yield an error-margin too big for a meaningful
average anyways. For individual orbits, the results of OGS15
could however still be vital.
If you run the algorithm, and obtain the data, please let
me know! I'd really like to know what answers my algorithm
gives for Venus. Contact me at the Cosmology Forum:
Instead of Venus, the next best planet to measure Perihelion
Precession, after Mercury is Mars, due to its eccentric orbit.
But first lets just take a look at Earth.