Septimus system
The Septimus system was the inhabited planetary system in the Alpha Quadrant. A planet in this system, Septimus III, was home to the headquarters of the Cardassian Eleventh Order in the 2370s.

In 2259, the location of this system was labeled on a stellar cartography chart that was seen on the 's ready room viewscreen. This system's symbol had a yellow color, indicating that it was affiliated with Cardassia Prime. ()

In 2374, the location of Septimus III was labeled on a tactical map that was on display in the wardroom of Deep Space 9. ()

In 2399, the location of Septimus was labeled in a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters. This system was in or near to Cardassian space. ()

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Star systems