Don't call it "Urine-nuss." That doesn't help. "YOOR-a-nus" is about the best you can do, and it doesn't work if you're writing.

Names that might work better:

--"The Seventh Planet"

--"The Other Neptune"

--So what was wrong with "Herschel?" or Herschel's name for it, "Georgium Sidus?" (Never mind, that last one just sucks.)

--go back to the old spelling of "Ouranos."

--"Planet Which Must Not Be Named"

Seamus and Dean, who were working nearby, sniggered loudly, though not loudly enough to mask the excited squeals from Lavender Brown--"Oh, Professor, look! I think I've got an unaspected planet! Oooh, which one's that Professor?"

"It is Uranus, my dear," said Professor Trelawney, peering down at the chart.

"Can I have a look at Uranus, too, Lavender?" said Ron.

Most unfortunately, Professor Trelawney heard him, and it was this, perhaps, which made her give them so much homework at the end of the class.

--Harry Potter and the Goblet of Fire

(Some translation problems with this passage.)

It also helps to avoid leaving yourself wide open. Any headlines along the lines of "Giant expulsion of gases from Uranus" should probably just be left alone.