Hogwarts Mnemonic: 9 Principal Moons of Saturn

Ever find yourself wondering what mnemonics Hogwarts students would memorize to help them learn, say, Astronomy? And then you picked a random list of Astronomy facts and created a wizarding mnemonic for it yourself?

Because who's never done that?

*cough*

Um. So.

Saturn has many moons, 35 of which are named, but these are the main ones:

Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion, Iapetus, Phoebe

The mnemonic:

"Measure Everything Twice; Don't Ruin This Hundred-Ingredient Potion."

If there are any actual Astronomy students out there -- Muggle or magic -- who find this useful, I'm happy to help! :)