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Table 4

Third-order polynomial expansion coefficients of k2 as a function of composition and planet mass for rocky and ice-rich planets: and Δk2 (x) = b0 + b1 × x + b2 × x2 + b3 × x3.

Rocky Ice-rich
(x = δFe) (x = xice)
a0 0.2997 0.2998
a1 0.1466 −0.9826
a2 −0.0198 2.836
a3 −2.659

Δk2
b0 0.1688 0.1687
b1 0.0219 −0.5691
b2 −0.0328 1.997
b3 −2.266

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