Enceladus

Enceladus is a small moon of Saturn. It is known as the "Saturn's main dump moon". The Nerd Search '88 satellite was dumped on this moon in 2113 as space junk. On this satellite, there was a sample of the un-mutated cold virus, as part of an experiment by Josh Gedgie to see what would happen to viruses if put in space. The virus sample was removed by Fry, Leela, and Farnsworth in 3011 in order to make a vaccine for common cold. The episode "Cold Warriors" implies that other space junk was dumped on this moon as well. However, much of this junk was covered up by centuries of ice buildup.

Quotes
Professor Farnsworth: Aha! [He turns his chair towards Leela and Fry.] That satellite was scuttled on Enceladus, Saturn's main dump moon!