::I've looked it over, and I "sort of" stand by my original formulas. I think things are confused by the symbol "a". In modern relativity textbooks that's the Schwartzschild radius, (also know as the "gravitating radius") but in Einstein's paper it was the semi-major axis of the ellipse. (You remember a and b being the semi-major and semi-minor axes of an ellipse from high school, right? That's what Einstein was using.) Now the reason I say "sort of" is that my supposedly nice approximation of <math>\frac{3GM}{c^2 a(1-e^2)}</math> was already simplified, by me, from what was in Einstein's paper. And that was an approximation in any case. The only way to get the really precise theoretical prediction is to solve numerically for a geodesic, by computer. Thet's what the Pijpers paper is comparing with the experimental measurements. [[User:SamHB|SamHB]] ([[User talk:SamHB|talk]]) 01:17, 5 September 2018 (EDT) | ::I've looked it over, and I "sort of" stand by my original formulas. I think things are confused by the symbol "a". In modern relativity textbooks that's the Schwartzschild radius, (also know as the "gravitating radius") but in Einstein's paper it was the semi-major axis of the ellipse. (You remember a and b being the semi-major and semi-minor axes of an ellipse from high school, right? That's what Einstein was using.) Now the reason I say "sort of" is that my supposedly nice approximation of <math>\frac{3GM}{c^2 a(1-e^2)}</math> was already simplified, by me, from what was in Einstein's paper. And that was an approximation in any case. The only way to get the really precise theoretical prediction is to solve numerically for a geodesic, by computer. Thet's what the Pijpers paper is comparing with the experimental measurements. [[User:SamHB|SamHB]] ([[User talk:SamHB|talk]]) 01:17, 5 September 2018 (EDT) |