Rampa 1, also known as Rampa I, was a planet located in the Rampa Minor system, within the Baxel sector of the Outer Rim Territories.
In 4 BBY, the populace of Rampa 1 rebelled against the Galactic Empire, following the example of Rampa 2. Both locales were violently subjugated by the Empire.
Rampa 1 was first mentioned in the 1997 novel The Hutt Gambit, the second volume of Star Wars: The Han Solo Trilogy written by A. C. Crispin. It was mentioned again in the 1998 novel Rebel Dawn, the third volume of the trilogy.
The 2009 reference book The Essential Atlas created the Rampa Minor system to differentiate Rampa 1 and Rampa 2 from Rampa III, a planet introduced in Brian Daley's Star Wars: The Han Solo Adventures, establishing that they are not in the same system.
Though The Essential Atlas places the Rampa Minor system rimward of Hutt Space, comments made by Han Solo during the events of The Hutt Gambit seem to imply that both Rampa 1 and Rampa 2 are not located in the Outer Rim Territories but rather closer to Coruscant and civilization.