Starbase 152 was a Federation starbase administered by Starfleet. Following the completion of its mission in the Beta Stromgren system, the USS Enterprise-D, with its main systems temporarily restored, proceeded to this starbase for inspection and additional repairs. (TNG: "Tin Man")

This starbase was only mentioned in dialogue.
According to Star Trek: Star Charts (p. 65) and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), Starbase 152 was located in the Beta Quadrant.

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