UDCT v5.59: O8c Gates D2 and D5 — Action Exists, Killed by Saturn Anomaly

Abstract

Registered result for option O8c after the v5.58 deposit (doi:10.5281/zenodo.22987510). Not a new registration. D2 passed: a closed non-relativistic QUMOND-type action exists. Extra tidal-derivative terms are negligible on SPARC and 1.02% in the solar region, so D5 used the full equation as registered. D5 failed: Cassini quadrupole is suppressed (\(Q_2 \approx -9\times10^{-29}\,\mathrm{s^{-2}}\)), but Saturn \(|\delta a| = 2.3\times10^{-11}\,\mathrm{m\,s^{-2}}\) exceeds the \(10^{-14}\) bound by a factor of about 2000. Screening acts only outside \(\sim 20\) AU; the planets sit inside and keep the slow \(\nu_0\) tail. O8c is killed. D8, D6 and D4 were not run. Two method notes are disclosed and do not change the verdict. Passing D2 does not validate UDCT.