A Federation starbase where the Kelpien Saru was received as a refugee after leaving Kaminar, and to which the Enterprise is later bound for upgrades.
Starbase 7 is a Starfleet-run facility referred to in both Discovery and Strange New Worlds. It has not been shown directly.
In the Discovery second-season episode An Obol for Charon, Saru, who believes he is dying, tells Michael Burnham about his arrival in the Federation. After Philippa Georgiou took him from Kaminar, he was granted refugee status and processed at Starbase 7. There he saw for the first time how many different peoples lived side by side in the Federation, an experience that led him to learn dozens of languages and to join Starfleet.
The base is mentioned again in the Strange New Worlds fourth-season episode Off-Hour, in which the USS Enterprise is on its way there for upgrades when an anomaly interrupts the journey.