Dinasia
Dinasia was a star system in the Beta Quadrant. 

In 2256, this system's location in Klingon space was labeled on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the . ()

In 2259, the location of this system was labeled on a stellar cartography chart seen on the 's ready room viewscreen. The system's symbol had a white color, indicating that it was a non-aligned system. ()

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Background information 

The Dinasian language might possibly have originated in this system.

The name of this system came from the source material used, the Star Trek: Star Charts and Stellar Cartography: The Starfleet Reference Library, to create the star charts seen in both Star Trek: Discovery.
According to Star Trek: Star Charts (p. 63) and Stellar Cartography: The Starfleet Reference Library ("Federation Historical Highlights, 2161-2385"), the primary of the Dinasia system was a K-class star. This system was located in or near to Federation space.

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Star systems