Aldera was the capital city of the planet Alderaan, notably housing the Royal Palace. It was located in the vicinity of snow-capped mountains, one of which was the Appenza Peak. It was lost along with the rest of Alderaan in 0 BBY, when Grand Moff Wilhuff Tarkin had the planet destroyed by the Death Star.
- Star Wars: The Clone Wars – "Assassin"
- Star Wars: Episode III Revenge of the Sith (First appearance)
- Leia, Princess of Alderaan (First identified as Aldera)
- Star Wars: A New Hope (Mentioned only)
- "Eclipse"—From a Certain Point of View
- "By Whatever Sun"—From a Certain Point of View (Indirect mention only)