├ Caliban system
└─ Orbiting Caliban (star)
Caliban IV is a gas giant composed of massive clouds of silicate and iron that give it a grey-green color.
A very old, dense ball of iron.
A slight magnetic field suggests the presence of a metallic core.
This iron-rich moon is a dark, reddish-brown, with bright white silicate streaks.
The surface of this moon is covered entirely with a frozen, brackish sea.