Impact of rotation on synthetic mass–radius relationships of two-layer rocky planets and water worlds

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Volume 701 (September 2025)

A&A, 701 (2025) A274

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Table 2

Results for the two-layer, IP planet displayed in Fig. 2.

▼	input
	Flattening parameter, f	0.05
	$A = ρ_{s, 2} / ρ_{2}^{b o t t o m}$ $\biga=\rho_{s,2}/\rho_2^{\rm bottom}$	0.69689
	Relative core size (pole), q	0.5

▼	output
	Equatorial radius, R_eq, in R_⊕	0.99621
	Total mass, M, in M_⊕	1.00000
	Relative mass of the core, M₁/M	0.24305
	Central-to-mean mass-density ratio, $ρ_{c} / ⟨ ρ ⟩$ $\rhoc/\langle \rho \rangle$	2.14162
	Top-to-central mass density ratio (core), $ρ_{1}^{t o p} / ρ_{c}$ $\rho_1^{\rm top}/\rhoc$	0.88047
	Rotation period, T, in h	6.36260
	Relative size of the core (equator), Q	0.49404
	Interface mass-density jump, $ρ_{1}^{t o p} / ρ_{2}^{b o t t o m} \equiv α$ $\rho_1^{\rm top}/\rho_2^{\rm bottom} \equiv \alpha$	1.88106
	Central-to-surface mass density ratio, ρ_c/ρ_s,2	3.06567
	Central pressure, P_c, in 10⁹ dyn/cm²	2696.31
	Interface pressure, P_i ≡ P(Z₁), in 10⁹ dyn/cm²	1488.09

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