Sometimes called The Desolate Twin
Known to most simply as the Moon, Luna is actually similar in size to Fronterra, but without a magnetic field, it is a cold dead rock with no atmosphere, water, or life whatsoever. The lunar regolith has a very high albedo reflecting the sun's astra onto Fronterra and Wilderos. This distorted light can have strange, powerful, and sometimes terrifying effects on some of the lifeforms it shines on. Luna's orbit radius around Wilderos is 1/4 that of Fronterra, and it rotates twice as fast as Fronterra.
Gravity: 1 M+