There are 6 location entries on Corellia. However several are obtained in different locations on different factions. These codex entries are not required for any achievements.
The High Security Section codex entry proximity location.
Codex type: Locations
Codex location: Belsavis: High Security Section
Codex coordinates: 76, 1555
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
The Maximum Security Section codex entry proximity location.
Codex type: Locations
Codex location: Belsavis: Maximum Security Section
Codex coordinates: -1329, 729
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
The Imperial Minimum Security Section codex entry proximity location.
Codex type: Locations
Codex location: Belsavis: Minimum Security Section
Codex coordinates: 1686, 1382
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
The Republic Minimum Security Section codex entry proximity location.
Codex type: Locations
Codex location: Belsavis: Minimum Security Section
Codex coordinates: 1133, 267
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
The mission progressor for '[WEEKLY] Daily Area: Section X'.
Codex type: Locations
Codex location: Belsavis: Section X
Codex coordinates: 632, -2151
Faction: Empire
Class: Bounty Hunter - Imperial Agent - Sith Inquisitor - Sith Warrior
Associated Achievement: None
Special Requirements: You must progress the mission '[WEEKLY] Daily Area: Section X' to obtain this codex entry
The mission progressor for '[WEEKLY] Daily Area: Section X'.
Codex type: Locations
Codex location: Belsavis: Section X
Codex coordinates: 421, -1444
Faction: Republic
Class: Jedi Consular - Jedi Knight - Smuggler - Trooper
Associated Achievement: None
Special Requirements: You must progress the mission '[WEEKLY] Daily Area: Section X' to obtain this codex entry
The mission progressor for '[HEROIC 2+] Fatal Errors/[HEROIC 2+] The Fatality'.
Codex type: Locations
Codex location: Belsavis: Section X: The Frozen Lake: The Fatality: Cargo Bay
Codex coordinates: 34, -1974
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
Special Requirements: You must progress the mission '[HEROIC 2+] Fatal Errors' as an Imperial character or '[HEROIC 2+] The Fatality' as a Republic character to obtain this codex entry
The Tomb codex entry proximity location.
Codex type: Locations
Codex location: Belsavis: The Tomb
Codex coordinates: -1112, -1393
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None