Orbital Chemical Heritage Theory: A Multivariate Framework Linking Elemental Compositional Isomorphism and Planetary Orbital Evolution

This paper proposes the "Orbital Chemical Heritage Theory (OCHT)", a novel framework establishing a correlation between the elemental/isotopic composition of spatially adjacent celestial bodies and their orbital dynamics stability. The theory posits that chemical isomorphism between neighboring bodies—such as the Earth-Moon system—serves as a "chemical signature" of shared primordial origins or historical material exchanges. Additionally, the study investigates the perturbation of orbital distances driven by continuous planetary mass loss. Using a Newtonian-derived mathematical model, we quantify the impact of Earth's atmospheric mass loss (5.2 x 10^7 kg/year) on the lunar semi-major axis. Our calculations indicate a cumulative orbital recession of approximately 0.3 meters per million years. While this effect is minor compared to tidal dissipation, it represents a persistent, non-zero factor in secular orbital evolution. By integrating spectroscopic data with dynamical simulations, OCHT offers a multidisciplinary approach to understanding planetary formation and evaluating exoplanetary system stability