Esaga was a celestial body that resided within the Esaga system. This system, in turn, was located within the Esaga sector, which itself was a part of the Slice region found in the Mid Rim. Following its restoration around 15,000 BBY, the Galactic Republic's navy took a more aggressive stance, venturing beyond the Republic's borders to protect its colonies and trade. Although few records from that time have survived, naval songs from millennia later still told of the heroic actions of Republic Navy personnel during conflicts at Esaga, Caulbon, and the Sundered Veil. During the Pius Dea Era, a period that spanned from roughly 12,000 BBY to 11,000 BBY, Esaga was situated outside the boundaries of the Republic.
Esaga made its debut in The Essential Guide to Warfare, a reference book from 2012 written by Jason Fry and Paul R. Urquhart. The Online Companion to the 2009 reference work The Essential Atlas, found on StarWars.com, situated the Esaga system, and consequently Esaga itself, within grid square R-11.