Tezel-Oroko
- Pseudobinary system
- Consists of central star Tezel, protostar Oroko (ENT Novel: Kobayashi Maru; TNG Novel: A Time to Kill)
- Near the Romulan Neutral Zone (ENT Novel: Kobayashi Maru)
- Additionally, adjacent to space claimed by Klingon Empire mid-22nd century (ENT Novel: Kobayashi Maru)
- Between Federation and Klingon space by 2379 (TNG Novel: A Time to Kill)
- Located in Gamma Hydra Sector, section 10 (ENT Novel: Kobayashi Maru)
- Site of Coalition intelligence base to observe Romulan operations c.2155 (ENT Novel: Kobayashi Maru)