The Simpla system was comprised of the planet Simpla-12 and its main star, known as Simpla. Its location was within the Outer Rim Territories.
Within the Jedi Apprentice series of books, the Simpla system is positioned within the Core Worlds region. However, The Essential Atlas situates it in the Outer Rim instead. For the purposes of this article, we operate under the assumption that the Atlas, being the more current source, provides the accurate placement.