Professional Strawman

A user on a different forum wrote a program to compute orbits using my method and the orbits were not closed loops. So the method is correct and it does introduce a precession on its own. The user on the forum used very small step sizes in his program and he said it took his computer hours to make a single orbit. Unfortunately that user quit after a few days and took out the program and the graphs he had uploaded. I am not sure I understand what errors you're referring to. The summation method, uses the initial velocity v, and the vector g, at position 1 [shown in the drawing] which is obtained by Newton's force law. Then it's just a matter of computing the resultant and using it again at the next parallelogram, shown at 2 and so on. When I use smaller steps, I essentially get the same orbit, only it looks smoother.

I am not familiar with CAD. I meant that the software should allow for very small step sizes when it computes the summations. Is it realistically possible to ascertain the data I am looking for via CAD? Hi all. Also is it possible to obtain the precession angle per revolution without using a simulator? Are there mathematical techniques that can be used to ascertain the data I am looking for?

Studiot, I will, thanks. If you find something that is easier to use and is accurate then please let me know. I am trying to relate this data to explain Mercury's anomalous precession without using an additional central force that Newton and Einstein do in their work. If the software is not accurate then it wouldn't serve my purpose.

Hi all. I am looking for a graphing software that can plot parallelogram law summations the way the diagram in the link below shows. As you can see the orbits traced with this technique begins to precess on its own, that is, without the need for an additional central force. I want to obtain the rate of precession per revolution based on the distance [inverse square]. Does anyone know how to obtain this information? http://3.bp.blogspot.com/-tFDkItTrHWY/Ug-bh0x_NRI/AAAAAAAAE6U/PKx81419uBA/s1600/Kepler's+Second+Law_4.bmp PS. If someone wants to know a little background behind this question please see here: url removed