Tau Alpha C

Tau Alpha C was the reported home of the The Traveler. The Enterprise computer was familiar with its inhabitants.

Considered to be very distant by Starfleet, at warp 9.5, it would take 123 days to travel from Starbase 133 to Tau Alpha C. A subspace message would take days to travel back and forth between both locations. This location was listed on Federation star charts. 

In an alternate universe created after Doctor Beverly Crusher became trapped within a warp bubble, Wesley tried to contact Tau Alpha C for assistance when individuals began disappearing from the Enterprise'', with only Dr. Crusher noticing. Ultimately, that entire universe, including its Tau Alpha C, disappeared.''

Background information
In, the traveler was said to be from Tau Ceti instead.

According to StarTrek.com, Tau Alpha C was the name of a star system. Under naming conventions for stars (ex. Alpha Centauri C), the name would suggest Tau Alpha C was the third star in a trinary star system.

According to the, Tau Alpha C was a "very distant planet".

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