Tramanos was a watery moon located within the Tramanos system of the Spumani sector. Due to the large percentage of cyanogen in the moon's atmosphere, it was the site of a Celegian colony during the Republic Dark Age. However, since the air also contained oxygen, other, oxygen-breathing species lived there, too, although they had to use hazard masks. It was visited by the Sith Lord Saaj Calician.
During the Republic Dark Age, Tramanos was located near the borders of the Sith Lord Daiman's territory as well as the borders of Dyarchy and was the site of a Celegian colony. The Sith Lord Saaj Calician visited this moon during his Sith apprenticeship at some point before or during 1040 BBY and finally encountered the Celegians, a species which he had loathed since his childhood.