Starbase 86

Starbase 86 was a facility active in the late 23rd century.

It was located six light-years from Chrysalis and not far from the Organian Treaty Zone and the Klingon colony world Korvat. USS's engines were overhauled there in 2295. (Orion Press: A Little Family Secret)

Reference

 * Landers, Randall and Endres, Rick. A Little Family Secret. (Orion Press)