Core Bastion

Core Bastion - Cosmic Anomaly
Class 6 Complex Site
NPCs - Hostiles

First Encounter
Sleepless Sentinel x2 (Battleship Class- )
Awakened Keeper x3 (Cruiser Class- )
Awakened Sentinel x3 (Cruiser Class - )
Awakened Warden x3 (Cruiser Class - )
Emergent Keeper x3 (Frigate Class - )
Emergent Sentinel x3 (Frigate Class - )
Orthrus x3 (Platform)

Killing the last Emergent Keeper triggers the next spawn.

First Wave
Awakened Sentinel x4 (Cruiser Class - )
Awakened Warden x4 (Cruiser Class - )
Sleepless Keeper x4 (Battleship Class - )

Killing the last Awakened Warden triggers the next spawn.

Second Wave
Awakened Warden x5 (Cruiser Class - )
Emergent Warden x6 (Frigate Class - )
Sleepless Guardian x4 (Battleship Class- )

Killing the last Sleepless Guardian triggers the next spawn.

Third Wave
Sleepless Sentinel x4 (Battleship Class- )
Sleepless Guardian x2 (Battleship Class- )

(Source)