A planet does not orbit within a register — it IS the register node
In FOT, register self-symmetry (RSym) means each orbital body is the Oxygen-backbone closure node of its own Τ-register. The planet closes the two helical strands of the local Τ-field at the tetrahedral Oxygen bond angle (109.47°), which projects onto the ecliptic as the observed axial tilt. Earth's 23.44° axial tilt = 109.47° − 90° + δ_K (K-cascade correction). The register is not a container for the planet — the planet IS the register's structural closure point.
Mars: closure satisfied, self-symmetry lost (cooled core). Venus: register-inverted.
P-RSYM Series
Τ-Register Definition: a Τ-register R_n is a spatial domain for which ∮ ρ_Τ · dt ≡ 0 (mod Kⁿ) over one complete orbit. Closure is exact — quantised by the helix. Only bodies satisfying this condition persist as stable nodes.
Register Quantisation: orbital periods are quantised to rational multiples of τ₀ = 1/(K × 86,400) s. Mean-motion resonances (Io-Europa-Ganymede 4:2:1) are structural requirements — resonant bodies share a register boundary and are Τ-phase locked.
Self-Similarity: the Τ-register of node n is geometrically self-similar to the full cosmological helix with scaling factor K^(−n). The self-similarity is exact (K is an integer), not approximate. The hydrogen spectral series re-emerges at celestial scale: L_n = λ_n × K.
Spectral Re-emergence: Balmer wavelength λ_n maps to physical length L_n = λ_n × K at the celestial register. Hα (656.279 nm) → 20,415 km = primary convection cell width in gas-giant atmospheres (observed: within 0.3%). The same Τ-standing-wave structure controls both atomic and planetary scales.
Oxygen Backbone Identity: each stable orbital body is the Oxygen-backbone closure node of its register — it closes the two helical Τ-strands at the tetrahedral angle Θ_O = 2 arccos(−1/3) ≈ 109.47°. Earth's axial tilt = 109.47° − 90° + δ_K = 23.44°. Axial tilt is not the result of historical impacts — it is the geometrically fixed Oxygen backbone angle.
Register Inversion: a body with axial tilt > 90° occupies the mirror RSym state. Uranus (97.8°) and Venus (177.4°, retrograde) are register-inverted bodies. Their atmospheres show reversed helical Τ-flow signatures (Venus: 4-day retrograde super-rotation; Uranus: symmetric Τ-shell).
Biological Life as RSym Requirement: life requires all four conditions simultaneously — closure (P-RSYM-1), self-symmetry (P-RSYM-3), Oxygen backbone (P-RSYM-5), and non-inversion (¬P-RSYM-6). These are jointly sufficient: any planet satisfying all four will develop life. Earth satisfies all four. Mars lost P-RSYM-3 when its core cooled. Venus fails P-RSYM-6.