Regulus
Regulus, also known as Alpha Leonis, was the primary of the Alpha Leonis system in the Beta Quadrant. This star was located three hundred light years from the Bajoran system. (; )

In 2154, a Vulcan High Command attack fleet massed in this star's system in preparation for an abortive preemptive strike against the Andorians. Regulus was the closest accessible star known to be outside the maximum range of Andorian Imperial Guard listening posts. ()

In 2256, this star's location was labeled on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the . ()

In 2257, during the first , this star's system was occupied by the Klingons. () 

In 2258, the star's location was labeled on a star chart seen on the main viewscreen of the . ()

In 2293, the location of Regulus in the Milky Way Galaxy was labeled in a star chart that was in Captain James T. Kirk's quarters aboard the . (, okudagram)

In 2399, the location of Regulus was labeled on a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters. This star was located in or near to Federation space. ()

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Stars