BCT model identifies potential Planet 9 at 347 AU through trans-Neptunian object clustering, suggesting geometric resonance might explain observations.
The anomalous clustering of trans-Neptunian objects suggests a hidden planet at ~400–800 AU. BCT identifies preferred orbital radii at r_n = r_Neptune × R_BCT^n where R_BCT = 1.843. This gives r_1 = 55.4 AU (the Kuiper Cliff — confirmed), r_2 = 102 AU, r_3 = 188 AU, r_4 = 347 AU (Planet 9 zone). BCT offers two interpretations: (A) Planet 9 exists at ~347 AU; (B) the TNO clustering is a geometric Bessel resonance effect requiring no physical planet. The Kuiper Cliff at r_1 = 55.4 AU constitutes an existing confirmed prediction. Zero free parameters.
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Michel Robert Cabrié (2026) studied this question.
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