Table 1: Major regular satellites radii, densities, and per mass ice/rock ratios derived from Brown et al. (1991).
Satellite R (km) $\rho$ (g cm^-3) I/R ratio

Miranda $235.8\pm 1.2$ $1.15\pm 0.15$ 1.5

Ariel $578.9\pm1.1$ $1.56\pm0.09$ 0.67-1

Umbriel $584.7\pm4.0$ $1.52\pm0.11$ 0.67-1

Titania $788.9\pm2.8$ $1.70\pm0.05$ 0.67-1

Oberon $761.4\pm3.0$ $1.64\pm0.06$ 0.67-1

**Table 1:** Major regular satellites radii, densities, and per mass ice/rock ratios derived from Brown et al. (1991).
Satellite	R (km)	$\rho$ (g cm^-3)	I/R ratio
Miranda	$235.8\pm 1.2$	$1.15\pm 0.15$	1.5
Ariel	$578.9\pm1.1$	$1.56\pm0.09$	0.67-1
Umbriel	$584.7\pm4.0$	$1.52\pm0.11$	0.67-1
Titania	$788.9\pm2.8$	$1.70\pm0.05$	0.67-1
Oberon	$761.4\pm3.0$	$1.64\pm0.06$	0.67-1

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