Rirsack, a planet situated within the Belsmuth sector of the Outer Rim, witnessed the valiant efforts of Lieutenant Lar Ndigo from the New Republic. He fought there either during or before 13 ABY.
The comic series Star Wars: Crimson Empire III—Empire Lost, penned by Mike Richardson, features two mentions of the planet Rirsack. Its initial appearance was in October 2011. Notably, Crimson Empire III: Empire Lost 1 uses the spelling "Rirsack," while Empire Lost 4 erroneously spells it "Rorsack." The correct spelling was verified through the Essential Atlas Online Companion.