Regulus III
From Memory Alpha, the free Star Trek reference.
Regulus III is the third planet of the Regulan system. It is located 300 light years from Deep Space 9.
In 2371, Jake Sisko's girlfriend, Mardah, was accepted to the Science Academy on this world. Benjamin Sisko was proud of her, stating that it was a good school. (DS9: "Fascination")
