Vega IX
You may also be looking for the Vega Nine probe.
Vega IX was the ninth planet in the Vega system of the Alpha Quadrant. This planet was located less than 90 light years from Earth. 

In the mirror universe, Vega IX was the location of a  colony, where Terran Empire Captain  executed 5,000 colonists in his second action as commanding officer of the . ()

Personnel

See also 
 Vega colony
 Vegan system

Appendices

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

In "Two Days and Two Nights", the  , set a milestone twenty-five years after Travis Mayweather was born on his fathers ship while it was on the Vega-Draylax cargo run, by becoming the first Earth ship to travel 90 light years away from the Sol system. This would be consistent with the location of the real star Vega, which is approximately 25 light years from the Sol system.

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

External link 
 

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Colonies