Sector 68H was a region of space, a sector which, as of the year 2280, had been charted by Starfleet, but not explored.
History and specifics[]
In that year, the USS Chandley, equipped with an experimental Kelvan warp drive, crossed into Sector 68H, at which point they found themselves unable to stop their engines. It was in this sector that the Chandley made first contact with the Lutralians. (SCE eBook: Foundations, Book Three)