Typhon sector
The Typhon sector was a region of space within Federation borders.

In 2373, Admiral  mobilized Starfleet in this sector to confront a Borg cube which was en route to Earth. The fleet failed to stop the cube, however, and continued the battle all the way to Sector 001. ()

See also 
 Typhon Expanse

External link 
 

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ja:タイフォン・セクター
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Sectors