The Secossi system existed inside the Spirva sector. The star at its center was named Secossi, and the star system included the planet called Lenthalis.
- Galladinium's Fantastic Technology
- Star Wars Adventure Journal 8
- Star Wars Adventure Journal 12
- Star Wars Adventure Journal 14
- The Essential Atlas (as Lenthalis system)
- Star Wars: The Essential Atlas Online Companion on StarWars.com (article) (backup link) (as Lenthalis system)