Hidden from early surveys by reflective objects in Dar'hegah's asteroid belt, H-505 is a frigid world with a krypton-nitrogen atmosphere.
- Hypervelocity impact crater (largest)
- Rim diameter: 402 km
- Depth: Approx. 2.1 km
- Ejecta: Mineral deposits, heavy metals
This is the largest of multiple impact craters, suggesting a swarm of debris - possibly from the asteroid belt - struck H-505 in the distant past.