Barisa Prime
Barisa Prime was the inhabited prime planet in its star system, in the Alpha Quadrant. This planet was located near the Federation-Tzenkethi border. The Helaspont Nebula was located in the same sector as this planet.

In the 24th century, this planet was home to a Federation colony. In late 2371, the  received a truncated message from Barisa Prime indicating that the colony was being attacked by Tzenkethi warships. The transmission was actually fabricated by a Founder posing as Ambassador Krajensky, as part of an attempt to incite war between the Federation and the Tzenkethi. ()

Appendices

Background information 

This planet's quadrant of origin is inferred based on the position of the Tzenketh system as seen in the star chart appearing in the  episode .

"buh-RISS-us" was the pronunciation for this planet's name from the  pronunciation guide.

According to the Star Trek: Star Charts ("United Federation of Planets I"), Barisa Prime was listed as a Federation member in 2378.

External link 
 

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Colonies
Planets