Sextus zeta

Sextus Zeta, the smallest and most distant orbital body of Argutilla Sextus, is no moon, but a small Void station of Aeldari manufacture, long abandoned.

It features a slender tower topped by a vast crystal dome featuring an orrery moving at exaggerated speed, featuring the Argutilla system in exacting detail, as well as two additional planets circling in around the space that is taken up by Argutilla's belt.