Mu-Ledger Audit Package: Pair-Total Gravitational Mass Parameter Residual Compression in Solar-System Orbital Data

This dataset accompanies the manuscript “The Gravitational Parameter as a Closure-Stable Observable: A Public Metrological Audit of GM=a^3n^2 in Solar-System Orbital Data.” It provides a machine-readable reproducibility package for a public metrological audit of the gravitational mass parameter mu = GM as the directly reconstructed observable of Keplerian orbital closure. The central calculated object is mu_orb = a^3 n^2 = 4 pi^2 a^3 / P^2. The package compares a central-only gravitational-parameter comparator against the source-consistent pair-total two-body mass parameter, mu_pair = G(M1 + M2) = GM1 + GM2. In the rounded planetary calibration, the central-only comparator leaves a predictable omitted-secondary residual, especially for Jupiter and Saturn, while the pair-total comparator collapses that residual toward the source-rounding scale. The package includes CSV calibration tables, compression-score summaries, leave-one-out robustness tests, a bootstrap summary, negative controls, source metadata, figure outputs, Zenodo metadata, CITATION.cff, and scripts for a live JPL Horizons source-consistent extension. The live Horizons script is included for reproducibility but was not executed in the deposited package environment; it should be run on an internet-connected machine before making high-precision source-consistent claims. The dataset does not claim a new law of gravity or a replacement for celestial mechanics. It provides a reproducible metrological audit showing that the directly closed object in relative two-body orbital reconstruction is the pair-total gravitational mass parameter, while central-only and separately decomposed G,M treatments are secondary comparison layers.