Regulon

Regulon is a trinary star system in the Alpha Quadrant. 

In 2370, the Bok'Nor delivered fourteen tons of golside ore to a location in the Regulon system before proceeding to Deep Space 9. 

Mirror universe
In 2377, a joint $𝜇$ and $𝜇$ battle fleet assembled at a location in the Regulon system for a planned attack on $𝜇$.