Multiple realities
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The following is a list of unnamed sectors.

Sector patrolled by USS Enterprise Edit

This sector was being patrolled by the USS Enterprise in 2267 when it received an alleged subspace message from Starbase 11. The sector was untroubled, with no alien problems. (TOS: "The Menagerie, Part I")

Sector containing Murasaki 312 Edit

This sector contained the quasar-like formation Murasaki 312 and at least four star systems, including the system containing the planet Taurus II.

In 2267, the USS Enterprise traveled through this sector on its course to Makus III. During the starship's time in the sector, Murasaki 312 ionized the entire sector. (TOS: "The Galileo Seven")

Sector where the Enterprise discovered the Botany Bay Edit

This sector was where, in 2267, the USS Enterprise discovered the SS Botany Bay. For years prior to this discovery, there had been no flights into this sector by Earth ships. (TOS: "Space Seed")

According to the 4th edition of the Star Trek Encyclopedia, this sector was the Mutara sector (vol. 2, p. 60) or was adjacent to the Mutara sector (vol. 1, p. 98).

Sector containing Unit XY-75847 Edit

This sector was where, in 2267, Unit XY-75847 reported the sighting of a fleet of Klingon ships to Starfleet Command. This sector was located in the same quadrant as Organia. (TOS: "Errand of Mercy")

Sector containing System L-370 Edit

This Alpha or Beta quadrant sector contained several solar systems, including L-370 and L-374. (TOS: "The Doomsday Machine")

According to the revised edition of the Stellar Cartography: The Starfleet Reference Library ("History of the United Federation of Planets"), which shows where the USS Constellation was destroyed, this sector was located near Klingon space.

Sector containing Babel Edit

As the Enterprise was assigned to this sector in 2268, it was given the mission of transporting the delegates of Federation planets to a council on the planetoid Babel. (TOS: "Journey to Babel")

Sector containing Capella IV Edit

This sector contained the inhabited planet Capella IV.

In 2267, the Enterprise visited this sector on a mission to Capella IV. Prior to this mission, Klingons had been detected in the sector. The USS Carolina was registered as being in this sector. (TOS: "Friday's Child")

Sector containing Romulan Neutral Zone Edit

This sector, containing a section of the Romulan Neutral Zone, was where the Enterprise entered the Zone, on a direct course, to Starbase 10 in 2267. (TOS: "The Deadly Years")

Sector containing M24 Alpha system Edit

This sector, containing the M24 Alpha system, was where the Enterprise, in 2268, followed an ionization trail to the planet Triskelion in the named system, where she retrieved her landing party. The sector was described as being empty by Montgomery Scott. (TOS: "The Gamesters of Triskelion")

Sector containing Starbase 6 Edit

This sector, containing Starbase 6, was visited by the Enterprise in 2268. It was located near Sector 39J. At the time of the Enterprise's visit, there were no indications of magnetic storms in the sector. (TOS: "The Immunity Syndrome")

Sector containing System 892 Edit

This sector, containing System 892, was first charted by the Federation survey ship SS Beagle in 2262. Six years later, the USS Enterprise would investigate the disappearance of the Beagle in this sector. (TOS: "Bread and Circuses")

Sector containing Beta XII-A Edit

This Alpha Quadrant sector, containing the planet Beta XII-A, was where, in 2268, the USS Enterprise and Kang's battle cruiser were lured to the named planet by distress calls fabricated by the Beta XII-A entity. This sector was scanned by the Federation starship for other ships, with negative results. (TOS: "Day of the Dove"; DIS: "Magic to Make the Sanest Man Go Mad")

Sector containing Type 4 asteroids Edit

In 2270, the USS Enterprise was assigned to this sector for a routine geological survey of type 4 asteroids. Near the completion of this mission, the Enterprise was ambushed by Romulan battle cruisers. (TAS: "The Practical Joker")

Sector containing Dramian star system Edit

This sector, containing the Dramian star system, was where the USS Enterprise reported an aurora in 2270. (TAS: "Albatross")

Sector affected by rogue cometEdit

This sector was colonized by several spacefaring civilizations originating from a single planet. Complex organisms on this planet would not have emerged without hydrocarbons supplied by a rogue comet designated Component 37329. In fact, if the comet had never existed, eight thousand civilizations and all life in an area of fifty light years would not have existed either. (VOY: "Year of Hell, Part II")

Sector attacked by Nausicaans Edit

In this sector, Earth Cargo Service freighters were frequently attacked, over a time period lasting years, by Nausicaan pirates. Travis Mayweather knew about the sector and the repeated attacks within it. One of the freighters which was assaulted in this area was the ECS Fortunate, which consequently sustained heavy damage, in 2151. When Enterprise NX-01 arrived to investigate the aftermath of the battle, the starship's crew found no other ships in the region. Despite subsequent onslaughts by the Nausicaans, Matthew Ryan, who was temporarily in command of the Fortunate, refused Enterprise's help, which his commanding officer, Captain Jackson Keene, reasoned was due to Ryan and others who had grown up on the freighter feeling that they had some special claim to ownership of this particular stretch of space and who typically became jumpy when they saw another ship within ten light years. After Keene resumed command of the Fortunate, Enterprise departed from the area. (ENT: "Fortunate Son")

In the first draft script of "Fortunate Son", Captain Archer recommended setting up regular patrols in this sector, to protect the freighters. However, Admiral Forrest, doubtful that plan would work, replied that the sector was "pretty big." Later in the teleplay, a freighter called the Gallant (later renamed the ECS North Star) was said to have been destroyed by Nausicaans in the same sector, a few years beforehand. In the final edit of the episode, however, the word "sector" is only mentioned once, when Mayweather tells Archer that Nausicaan pirates had been "attacking freighters in this sector for years."

Sector containing ArkariaEdit

The sector containing Arkaria was notable for having several cultures with extremely similar etymological histories. (TNG: "Starship Mine")

Sector containing Avery systemEdit

This sector contained the Avery system, which housed a Vidiian base. The sector was visited by USS Voyager in 2371. (VOY: "Faces")

Sector containing Hanon IVEdit

In 2373, after the Voth scientists Forra Gegen made a startling discovery on Hanon IV, he called for mounting a sector-wide expedition in order to find the ship from which it originated. (VOY: "Distant Origin")

Sector containing penal moonEdit

This sector contained a penal moon for the members of the factions Ennis and Nol-Ennis in the Gamma Quadrant. The Federation had begun exploration of this sector after the discovery of the Bajoran wormhole in 2369. (DS9: "Battle Lines")

Sector containing RinaxEdit

This sector contained Rinax, which featured the hottest summers in the sector. (VOY: "Macrocosm")

Since Rinax was a moon of Talax, Talax was presumably located in the same sector.

Sector containing Taurean systemEdit

This sector contained the Taurean system. Earth vessels associated with the Federation had visited it for at least a century and a half before 2269. However, despite it long having been trafficked, Starfleet by 2269 still considered it an unfamiliar sector. Klingon and Romulan ships had visited the sector for some time as well, and ships from all three powers had disappeared in mysterious circumstances there. (TAS: "The Lorelei Signal")

Sector in Nasari territory Edit

Region near Taresia

The "region" Voyager was said to be in while in this sector; map includes the Taresian system

USS Voyager was welcomed into Nasari territory while passing through this sector in 2373.

The sector also contained a trinary star, of which Chakotay decided to mark the coordinates as it would be a good reference point for the sector. (VOY: "Favorite Son")

Sector in which Danara Pel was foundEdit

Voyager traversed this sector in 2372. Here, it found the distressed Vidiian ship carrying Doctor Danara Pel. No other Vidiian ships were detected in the sector. (VOY: "Lifesigns")

Sector known for Porakan eggsEdit

This sector, visited by Voyager in early 2372, contained the planet Porakas IV. The Porakan eggs from that planet were known as the most flavorful eggs in the sector. (VOY: "Flashback")

Sector on edge of Federation spaceEdit

At the start of the Federation-Klingon War of 2256, part of this sector was at the edge of Federation space. It contained a binary system with an accretion disk. (DIS: "The Vulcan Hello")

Given the close (six light years) distance of the binary star to Gamma Hydra, this could be the Gamma Hydra sector.

Sector scanned by Tom ParisEdit

As part of his historic Warp 10 flight in 2372, Tom Paris collected data on every cubic centimeter of the sector Voyager was then in. Over five billion gigaquads of information were collected. (VOY: "Threshold")

Sector with large plasma driftEdit

This sector, traversed by Voyager in 2372, contained a large plasma drift extending almost half its length. It also contained a Vidiian-controlled G-type star system and heavy Vidiian activity in general, with twenty Vidiian ships detected. (VOY: "Deadlock")

Supernova sectorEdit

In 2373, three stars within the same cluster went supernova in less then three days, due to the Q Civil War. (VOY: "The Q and the Grey")

Swarm territory sectorsEdit

Based on what appeared to be the borders of the Swarm species' territory, they were extrapolated to occupy hundreds of sectors. (VOY: "The Swarm")

Triona system sector Edit

This remote sector contained the Triona system. Its isolation led Beverly Crusher to speculate that Lieutenant Keith Rocha could have been absorbed by a coalescent organism while posted there. (TNG: "Aquiel")

Uncharted Necro Cloud sectorEdit

The "escape pod" on which Kalara arrived at Starbase Yorktown in 2263 was tracked to coordinates 210 mark 14, in a sector of an uncharted nebula, the Necro Cloud. The area was uncharted due to the nebula being too dense. The USS Enterprise subsequently managed to penetrate the area, finding the planet Altamid. (Star Trek Beyond)

Sector containing Amargosa starEdit

This sector contained the star Amargosa. In the late 24th century, the Federation research station Amargosa observatory observed the star from its location in the Amargosa system. In 2371, after receiving a distress call from the staton, the USS Enterprise-D came to the rescue of the station's scientists. Upon discovering two dead Romulans, the starship sent a message to Starfleet Command about a possible Romulan threat to the sector. Soon afterwards, Amargosa was destroyed by Doctor Soren, resulting in major effects throughtout the sector. These included an increase in gamma emissions and changes in the gravitional forces, necessitating any starship traveling through the sector performing minor course corrections. As the Nexus entered the sector, these changes would alter its course towards the Veridian system. (Star Trek Generations)

There was, as well, a change in the ambient magnetic fields; however, this change was not mentioned in the film.