Rhigar 3, the farthest of the three moons circling the planet Rhigar found within the Rata Nebula, held the Chiss military academy where Jag Fel was once a student. From the perspective of the planet's surface, Rhigar 3 had a blue color, suggesting that it was likely largely, if not completely, composed of water.
Despite its orbital distance beyond Asdroni and the inner forest moon, Rhigar 3 possessed a near-tropical climate, complete with oceans boasting significant coral formations.
The majority of details known about Rhigar 3, including its designation, originate from the book The New Jedi Order: Dark Journey. In Red Sky, Blue Flame, the academy world's third moon is merely referred to as "distant" and "blue." It is from this singular reference to the name Rhigar 3 that the name Rhigar has been attributed to the academy world itself. The name of the planet was later verified in The Essential Atlas.