Based on the Real-Virtual Dual-Field Theory and the mathematical framework of Conjugate Golden Decay Rate, the field resistance coefficient $$\xi=0.083\ \mathrm{AU^{-1}}$$ extrapolated from the Neptune-Triton orbital region is adopted in this paper. Theoretical derivations are performed for the source weight, affiliated celestial system and long-range field perturbation of Planet Y at 132 AU and candidate Planet Nine at 500 AU. Five observationally verifiable astronomical predictions available during 2026–2027 are derived naturally: frequent short-duration stellar occultations across the Serpens-Libra sky region, clustered distribution of extreme trans-Neptunian objects in orbital longitude and inclination, anomalous orbital deflection of long-period comets, cold moving far-infrared sources within the target sky area, and periodic tiny orbital oscillation of classical Kuiper Belt objects. All predictions originate quantitatively from decay equations without arbitrary empirical assumptions. If future observational results deviate moderately from theoretical values, only local field resistance parameter needs fine-tuning, while the core framework of Conjugate Golden Decay constants and Real-Virtual Dual-Field remains intact. This work provides targeted guidance for future deep-space survey toward distant outer Solar System planets.