Possible Clues:

• For all to see: what Reagan did for the world
• A solar system 'ice giant'
• Planet beyond Saturn (... first two)
• Planet discovered by William Herschell in 1781
• Managed university in America — it’s another world!
• Posh artist taken with return of star and planet
• I hear you are an American Olympian
• Miranda and Ariel circle it
• It's orbited by Miranda
• The only planet whose name is derived from a character in Greek mythology