Starbase 23 was a Federation starbase; the nearest starbase to Terra 10 and the Arachna supernova. (TAS: "The Terratin Incident")

In 2369, Dr. Beverly Crusher was to be subject to a medical board of inquiry at Starbase 23 after disobeying Captain Picard's orders and performing an autopsy on the Ferengi, Dr. Reyga, against Ferengi tradition. After determining that he was murdered and identifying the culprit, Dr. Crusher was returned to duty and was not tried in front of the board. (TNG: "Suspicions")

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