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Bolarus IX, also known as Bolius IX, Bolias, or simply Bolarus, was the inhabited ninth planet in the Bolarus system. This planet was the homeworld of the Bolians, a warp-capable humanoid species. It was located in the Bolian sector of the Alpha Quadrant. (TNG: "Allegiance"; DS9: "The Forsaken"; VOY: "Unity", "In the Flesh")

The Bank of Bolias was located on Bolarus IX during the late-24th century. (DS9: "Who Mourns for Morn?", "Honor Among Thieves")

The first name Frederick bore a close resemblance to a rather impolite term on the Bolian homeworld. (VOY: "Dreadnought")

Curzon Dax and young Ensign Benjamin Sisko spent some time on the planet. Once Curzon had to escort a drunk Sisko home from a bar, as Ezri Dax once remembered. (DS9: "Field of Fire")

During the 2360s, Bolarus IX shared an uneasy cease fire with the Moropa. (TNG: "Allegiance")

Petty officer Zim Brott's wife, co-husband and two children lived on Bolarus while he was serving on Deep Space 9. (DS9: "Field of Fire")

During the Dominion War (2373-75), the Bolian front was a major area of conflict and important to the defense of the Federation. This may have been centered on the Bolian homeworld, or the Bolian sector. (DS9: "Penumbra")


Background information[]

This planet was only mentioned in dialogue.

Like the Bolian species, the Cliffs of Bole were named after director Cliff Bole; however, their location has never been specified on screen. (Star Trek Encyclopedia, 4th ed., vol. 1, p. 146)

In an early draft of the script for "The Reckoning", it was Bolarus and the Bolian system, and not Benzar, that had been captured by the Dominion and liberated by the Romulan Star Empire in 2374. [1]

In the first draft script of "Field of Fire", the planet was referred to as "Bolia" but this was changed to "Bolarus" in the final version. [2]

According to Star Trek: Star Charts (p. 56 & 66) and Stellar Cartography: The Starfleet Reference Library ("Stellar Cartography" pp. 14-15; "Dominion War: Strategy and Battles, 2373-75"), Bolarus IX orbited a Class B star. This system was threatened by the Dominion from an occupied Benzar between 2374 and 2375.

In the TNG episode "The Chase", it appeared that the episode would run short, so Ronald D. Moore added a scene in which Mr. Mot is tested by Dr. Crusher as one of the seventeen crew members said to come from non-Federation worlds, but this was cut from the final episode. This scene would have thus established that Bolarus IX is not a Federation member. (Star Trek: The Next Generation Companion (2nd ed., pp. 243-244)) The script for this episode, including the deleted scene, can be found here. The scene was also included as a bonus feature on the TNG Season 6 Blu-ray.


The Starfleet Operations Manual describes Bolarus IX as the ninth planet in the system of the subgiant blue star Bolarus (β). It is stormy and oceanic, situated close to the Romulan Neutral Zone. Due to its location, it became a theatre of conflict during the Dominion War.

The novels A Time to Kill and Articles of the Federation state that former Federation President Min Zife (β) was from Bolarus, first serving as planetary district representative, then as Bolian Federation councilor, and finally as president. The councilor representing Bolarus during the novels' timeframe (2379/2380) was Nea (β).

In the video game Star Trek: Elite Force, Bolarus IX is referred to as "Boliax".

According to his personnel file in the video game Star Trek: Starship Creator, Chell was born on Bolarus IX in the year 2341. It also reveals he has a brother named Koss who resides on the planet.

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