Talna III was a planet 31 parsecs from Sol, lying between it and Rigel.
Talna III was first settled by Orions, who founded a Colony there in July 1037 CE (reference stardate -10/3707). This marked the greatest ever extent of Orion space. However, the Colony was later abandoned.
- This presumably occurred during the Reverse of Orion history.
Much later, Talna III was settled by Federation citizens, of Andorians, Humans and Vulcans, during the 22nd or 23rd century.
On stardate 1/1811.07, a fleet of Orion ships arrived at Talna III, carrying Orion settlers hoping to re-establish their Colony. However the Federation colonists turned them away. The Botchok Planetary Congress protested to the Federation Council, who stated that prior settlers (i.e. the Federation colonists) had the right to refuse later immigrants (the returning Orions). Although the Federation claimed to uphold the rights of prior inhabitants, unoccupied ruins were not enough to claim those rights.
The Orions were incensed, and "Talna" became a symbol of Federation desires to annihilate them. (FASA module: The Orions: Book of Common Knowledge)