Frontier Command Post

Frontier Command Post - Cosmic Anomaly
Class 4 Complex Site
NPCs - Hostiles

First Encounter
Emergent Defender x4 (Frigate Class - )
Emergent Preserver x4 (Frigate Class - )
Argos x5 (Platform)

Killing the last Emergent Preserver triggers the next spawn.

First Wave
Awakened Defender x6 (Cruiser Class)
Emergent Upholder x4 (Cruiser Class - )
Sleepless Defender x2 (Battleship Class - )

Killing the last Awakened Defender triggers the next spawn.

Second Wave
Awakened Defender x2 (Cruiser Class)
Awakened Preserver x2 (Cruiser Class - )
Sleepless Preserver x3 (Battleship Class - )

(Source)