Calder system
The Calder system was an inhabited planetary system in Sector 2158, a region of space in the Beta Quadrant. The system consisted of a primary and four planets, including Calder II. In the 2360s, this planet was home to a Federation science station and historical preserve. ()

In 2259, the location of this system was labeled on a stellar cartography chart seen in the 's ready room viewscreen. The system's symbol had a blue color, indicating that it had an affiliation with the . ()

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

In 2401, the location of Calder was labeled on a star chart that was seen on the 's bridge viewscreen. The chart was used to show the location of the combined Starfleet-Borg armada and where it needed to go to face a galactic-level threat. ()

In 3190, the location of Calder was labeled on a star chart used by Commander Paul Stamets for tracking the movement of the Dark Matter Anomaly through the galaxy. ()

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Star systems