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Mercury preccession

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Mar 5, 2022, 10:26:37 AM3/5/22
Reference tells us that the precessesion of Mercury *advances* over
time. `The effect is small: just 42.98 arcseconds per century for
Mercury; it therefore requires a little over twelve million orbits for a
full excess turn'

[Moderator's note: The precession is much larger. The figure you
mention is the excess which GR can explain but Newtonian theory can't.

Does this advance equate to any anomalous decrease or
increase in orbital speed of mercury as it moves away from its perigee.
A change not predicted by Newtonian mechanics? In other words does
Mercury gain or lose speed excess to that expected at perigee?

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