Information Field Dark Matter IV: Planet 9 as Primordial Black Hole — Testable TNO Clustering Beyond the Newtonian Horizon

We model Planet 9 as a 5 M⊕ primordial black hole generating an Information Field with torque ∝ 1/r (vs Newton 1/r²). Predicts sustained TNO clustering R_IF=0.25 at 1000-1600 AU (vs R_N=0.07). Falsifiable by Vera Rubin LSST 2026. Extends FhiemDien series: FhiemDien. 2026b, Planet 9 Position Prediction from Black Hole Entropy Gradient Anal-ysis, Zenodo, DOI:10.5281/zenodo.18774095FhiemDien. 2026a, Information Field Dark Matter I: Deriving the Baryonic Tully-FisherRelation from Holographic Black Hole Entropy, Zenodo, DOI:10.5281/zenodo.18779541FhiemDien. 2026c, Information Field Dark Matter II: SPARC 116 Galaxies, Zenodo,DOI:10.5281/zenodo.18785473FhiemDien. 2026d, Information Field Dark Matter III: LITTLE THINGS Dwarfs, Zenodo,DOI:10.5281/zenodo.18785473