Pas-40's moon likely came into being through a massive asteroid impact millennia ago, creating both the planet's rings and Pas-40a.
- Hypervelocity impact crater
- Rim diameter: 357 km
- Depth: Approx. 2.3 km
- Ejecta: Mineral deposits
Buried at the center of this crater is an ancient metal object that appears to be some sort of torpedo. It seems Pas-40a was caught in the crossfire of a space battle centuries or millenia ago.