Tanga I is a chthonian planet in the unclaimed Tanga system. Dense and metallic, it was once the core of a gas giant and has high gravity in spite of its relatively small size. When its sun expanded into its red giant phase, its newly close proximity to the star's surface stripped away the world's hydrogen and helium atmosphere via hydrodynamic escape. Any ice that once surrounded the core evaporated away, leaving only metal and silicates behind it.