A moon of Saturn is only sort of real ...

This reminds me of the start of Pratchett's "Moving Pictures" ...

Quantum Hyperion | Cosmic Variance

... Zurek and Paz calculate ... that if Hyperion were isolated from the rest of the universe, it would evolve into a non-localized quantum state over a period of about 20 years. It’s an impressive example of quantum uncertainty on a macroscopic scale...

Hyperion is one of Saturn's moons.

Read the entire article to learn how Hyperion decoheres. Meaning stays real (albeit with locality).