Starbase 47 (known as Vanguard) was a United Federation of Planets facility active during the 23rd century. (Star Trek: Vanguard novel: Harbinger)
- A different Starbase 47 would be in service during the 24th century. (TNG: "Aquiel")
After USS Constellation discovered the metagenome in the Taurus Reach in 2263, the Federation fast-tracked the construction of a base in the region.
The station's first commanding officer was Commodore Diego Reyes, and he was later succeeded by Admiral Heihachiro Nogura. (Star Trek: Vanguard novel: Open Secrets)