There are 7 unique codex entries in the Locations section on Imperial Taris. They are faction specific.
Brejik's Run is obtained near a proximity map trigger.
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None
Brell Sediment is obtained near a proximity map trigger.
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None
Endar Spire is obtained near a proximity map trigger.
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None
Republic Resettlement Zone is obtained near a proximity map trigger.
Coordinates: -961, -86 | -927, 929
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None
Sinking City is obtained near a proximity map trigger.
Coordinates: -915, -85 | 266, -135 | -622, 303
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None
Transport Station Five is obtained near a proximity map trigger.
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None
Tularan Marsh is obtained near a proximity map trigger.
Coordinates: 265, -105 | 278, 567
Codex type: Locations | Faction: Imperial | Class: All
Associated Achievement: None