40 Eridani, commonly known as known as the Vulcan system (or Vulcanis system), is 16 lightyears from Earth and the location of the planet Vulcan. It is a trinary system, with 40 Eridani A being the main star. The other two stars in the system, 40 Eridani B and 40 Eridani C, orbit 40 Eridani A every 8,000 years and each other every 250 years or so.

The 40 Eridani A Starfleet Construction Yards and the Hephaestus Fleet Yards are located in this system. (TNG: "Night Terrors", "The Wounded"; Star Trek: Liberty)

History[edit | edit source]

The system was a focal point during the Dominion War with three separate attacks targeted at the system in 2374. The Dominion's first attack reached the edge of the system before it was halted and after eight weeks of fighting Dominion forces were forced out of the system. Their second attempt reached the fifth planet before it was again defeated. The third and final attempt made to conquer the system was defeated at the system's Oort cloud. (The Dominion War Sourcebook: The Fires of Armageddon)


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Characteristics[edit | edit source]

Star Trek: Star Charts[edit | edit source]

The Dominion War Sourcebook: The Fires of Armageddon[edit | edit source]

  • Vulcanis I
  • Vulcanis II
  • Vulcanis III
  • Vulcanis IV
  • Kal-Ap-Ton (Vulcanis V)
    • 12 natural satellites
  • Kir-Alep (Vulcanis VI)

Background information[edit | edit source]

External links[edit source]

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