The Explored Galaxy

The location of Regulus on "The Explored Galaxy" star chart

The Alpha Leonis system was an inhabited star system. Regulus was the primary of the system. Notable forms of life in this system included the eel-birds of Regulus V and the Regulan bloodworms. (TOS: "The Cage", "The Menagerie, Part I"; TNG: "The Vengeance Factor"; Star Trek VI: The Undiscovered Country, production art; TOS: "Amok Time"; ENT: "Two Days and Two Nights") The system was located three hundred light years from the Bajoran system. (DS9: "Fascination")


In 2154, a Vulcan High Command attack fleet massed in this 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. (ENT: "Kir'Shara")

A century later, in 2254, Christopher Pike considered retiring and going into business on Regulus or on the Orion colony. (TOS: "The Cage", "The Menagerie, Part I")

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 USS Enterprise-A. (Star Trek VI: The Undiscovered Country, okudagram)

In 2366, this system was in need of medical supplies, which were transported there by the USS Enterprise-D. (TNG: "The Vengeance Factor")

Prior to 2371, a science academy was founded on Regulus III. In the opinion of Commander Benjamin Sisko, the CO of Deep Space 9, this was a good school. (DS9: "Fascination")


Additional references Edit

Background information Edit

The association between the Alpha Leonis system mentioned in "The Vengeance Factor" and the Regulus star and planets is based on reference material and the real world association. According to Star Trek Maps (p. 29), The Worlds of the Federation (p. 130) and, Alpha Leonis was the same system as Regulus. In the real world, Alpha Leonis is the Bayer classification name for Regulus.

According to the Star Trek: Star Charts (pp. 56,61,62), the Regulus (also known as Alpha Leonis) system was located in the Beta Quadrant. It was a trinary star system. Regulus A was a B-class star with a magnitude of +1, which was a hundred times brighter than Sol. Regulus B was a M-class star. Regulus C was a K-class star. In 2152, this system was in non-aligned space. By 2378, the system had been incorporated into Federation space, and was a destination on the major space lanes.

The Star Trek Encyclopedia (4th ed., vol. 2, p. 212) described Regulus as "a multiple star, the brightest of which is a blue-white main sequence star, located some 79 light years from Earth."

Apocrypha Edit

According to the novelization of the episode TOS: "The Man Trap", in Star Trek 1, the planet M-113 was the eighth planet in the system, Regulus VIII.

External links Edit

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.