TSCT Planetary-System Class Derivation
TSCT Planetary-System Class Derivation TSCT type Constitutive organization Dominant partition Envelope Exterior state Consequential separator Rough analogue P1 Exposed condensed body Rock/metal dominated Negligible Condensed surface No load-bearing volatile/H-He envelope Rocky planet P2 Volatile-condensed body Rock/metal + major volatile condensed phase Minor/non-dominant Ice/ocean/high-pressure volatile boundary Volatile inventory reorganizes structure while condensed phases remain dominant Ice/ocean world P3 Envelope-bearing condensed body Condensed interior dominates mass Structurally consequential but subordinate No exposed condensed surface Envelope becomes load-bearing for radius/thermal evolution Sub-Neptune P4 Envelope-dominated heavy-element body Heavy-element interior remains major Deep fluid envelope Fluid exterior Envelope controls bulk behavior but heavy-element fraction remains constitutive Uranus/Neptune-like P5 H/He-dominated giant H/He dominates mass and volume S...