A faint outward extension to the ORGANIZATION@1 has been named Lassell ; it is bounded at its outer edge by the Arago Ring at NUMBER@1 km .

Also with the thin PERSON@1 Ring about NUMBER@2 km from the center of LOCATION@1 , the Leverrier Ring is at NUMBER@3 km and the wider , smaller LOCATION@2 is at NUMBER@4 km . A very small outward expansion to the Leverrier Ring has been named Lassell ; it is surrounded at its outer edge by the Arago Ring at NUMBER@5 km .
