Quarantine Area

Quarantine Area - Cosmic Anomaly
Class 5 Complex Site
NPCs - Hostiles

First Encounter
Sleepless Sentinel x1 (Battleship Class - )
Awakened Keeper x2 (Cruiser Class - )
Emergent Escort x3 (Frigate Class - )
Orthrus x4 (Platform)

Killing the last Emergent Escort triggers the next spawn.

First Wave
Awakened Sentinel x4 (Cruiser Class - )
Sleepless Sentinel x2 (Battleship Class - )

Killing the Sleepless Sentinel triggers the next spawn.

Second Wave
Awakened Warden x3 (Cruiser Class - )
Emergent Sentinel x5 (Frigate Class - )
Sleepless Keeper x2 (Battleship Class - )

(Source)