The Athena Nebula lies roughly at the centre of Outer Council Space, and is historically its most prominent cluster. The heart of Asari Republics territory, it contains the asari homeworld.
Ialessa System: Ilmnos, Sanves, Zylium, Trikalon, Nossia
Orisoni System: Thissioni, Niacal, Kralla, Egalic.
Parnitha System: Kurinth, Thessia, Piares, Janiri, Athame, Tevura.
Tamaros System: Lusia, Niagolon, Pronoia, Beness.
Vernio System: Nauti, Sotera, Promavess, Tritogenith, Polissa
Post Reaper War, the Athena Nebula is linked on the relay network to the Zahel Sea, the Silean Nebula, Belon's Rift, the former Krogan DMZ and the Nimbus Cluster.