Bema was a planet and the site of an Orion colony.
It was the site of the Bema revolt of October 7822 BCE (reference stardate -98/2210), when over 50,000 Green Orion and lower-class Ruddy Orion slaves protested against their working conditions and began an uprising that demanded the freedom of all Orion slaves everywhere and the liberation of their homeworld.
The Grey Orion Julin Hyrax the Brave volunteered the services of himself and his fellow Greys to the Magistrate of Bema to help stop the revolt. When the Magistrate refused in his distrust of all Orions, Julin went ahead anyway, and lead his force of 3000 unarmed Greys against the revolutionary army and demanded their surrender. Only 22 survived the massacre and Julin was revered as a martyr to a better future. (FASA RPG module: The Orions: Book of Deep Knowledge)
In 1317 BCE (stardate -33/17), the first legal Orion-built and -crewed starships were launched from shipyards on Bema, Nilor and Sharu. These unarmed merchant vessels were intended for legitimate trade and were always open to inspection by the alien powers that dominated the Orions. (FASA RPG module: The Orions: Book of Common Knowledge)