Hayashi system
The Hayashi system was an uninhabited planetary system. 

In 2366, the  was preparing detailed exospheric charts of the system as a prelude to colonization. Its mission was interrupted by the , concerning a recent discovery at Beta Stromgren. ()

In 2371, the location of the Hayashi system was labeled in the star chart Data and Picard were studying in stellar cartography aboard the . (, okudagram)

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Star systems