The precession of Mercury is presented as one of the threshold moments for general relativity. Are there any publicly available summaries of the classical anomaly? Most refer to a 1947 paper that uses an outdated reference frame. Clemence, G. M. (1947). "The Relativity Effect in Planetary Motions". Reviews of Modern Physics 19 (4): 361–364. This source gives a precession of the equinoxes of 5025.64, an observed precession of 5599.74 and a tug from the planets of 531.63. This produces an actual precession of 574.1. NASA gives a value of 5028.83 for the precession of the equinox, using a modern standard frame. Is there a publicly reference for the actual precession of Mercury, or the precession in J2000 used by NASA? http://ssd.jpl.nasa.gov/?constants This source from 2008 gives an observed precession of 5600.73, but is unclear what frame is used. http://books.google.com/books?id=fp9wrkMYHvMC&pg=PA70#v=onepage&q&f=false Is it inaccurate to conclude the current values suggest a classical anomaly as follows: The precession of Mercury is [itex]5600.73-5028.83-531.63=40.27[/itex], a 2.71 arcsec/century variance from the 42.98 prediction of GR.