H'atoria system
The H'atoria system was an inhabited planetary system in the Beta Quadrant. A planet in this system, H'atoria, was home to a small Klingon colony.

In 2016, a Vulcan ship crossed into Klingon space near H'atoria and was immediately destroyed by the Klingons. In the aftermath, Vulcans established a policy of firing first when encountering Klingons, earning their respect and eventually leading to the establishment of formal relations. () 

In 2256, the system's location was labeled on the star chart "Alpha/Beta Quadrant Overview" in the ready room aboard the . It was located in the territory of the Klingon Empire. ()

A year later, the system's location was labeled on the star chart showing the trajectory of Lieutenant Spock's shuttle. ()

In 2258, the system's location was labeled on a star chart seen on the main viewscreen of the . ()

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 was a red Klingon Empire logo, indicating its affiliation with the empire. () 

In 2399, the system's location was labeled on a a Federation star chart that was in Fleet Admiral Kirsten Clancy's office at Starfleet Headquarters. This system was located in neutral space. ()

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Star systems