On Wednesday, 21 April 2021 at 14:24:37 UTC+10, wrote:
My proposal that perihelion advance rates are proportional to m/M*180,
gforce(m)/gforce(M)*180, orbitrad(M)/orbitrad(m)*180 (relative to the
barycenter), etc. is reinforced by the attached Qbasic program.

The program is designed to demonstrate the perihelion advance rate of
the moon in orbit around the earth.
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With an aphelion speed of 300m/sec, eccentricity is greater than .9
and the advance rate is 2.2 degrees per cycle.

A little belated, but here's the image.
image here---------
https://drive.google.com/file/d/1OvX...ew?usp=sharing
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