There are 10 lore codex entries on Yavin IV. These codex entries are not required for any achievements, five are found in an operation, and some are faction specific.
The An Omen Most Dire codex entry obtained from a conversation.
Codex type: Lore
Codex location: Yavin IV: Forgotten Terrace
Codex coordinates: 1558, -118
Faction: Republic
Class: Jedi Consular - Jedi Knight - Smuggler - Trooper
Associated Achievement: None
Special Requirements: You must progress the mission 'The Enemy Within' to gain access to this codex entry
The Coalition codex entry obtained from a conversation.
Codex type: Lore
Codex location: Yavin IV: Coalition Staging: Coalition Command Post
Codex coordinates: 3600, 125
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 'Confederacy' to gain access to this codex entry
The Dark Legacy of Yavin 4: Part I codex entry datapad.
Codex type: Lore
Codex location: Yavin IV: Temple of Sacrifice: Antetemple
Codex coordinates: -480, -54
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 '[OPERATION] The Temple of Sacrifice' to gain access to this codex entry
The Dark Legacy of Yavin 4: Part II codex entry datapad.
Codex type: Lore
Codex location: Yavin IV: Temple of Sacrifice: Antetemple
Codex coordinates: -333, 74
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 '[OPERATION] The Temple of Sacrifice' to gain access to this codex entry
The Dark Legacy of Yavin 4: Part III codex entry datapad.
Codex type: Lore
Codex location: Yavin IV: Temple of Sacrifice: Overgrown Courtyard
Codex coordinates: -14, 194
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 '[OPERATION] The Temple of Sacrifice' to gain access to this codex entry
The Dark Legacy of Yavin 4: Part IV codex entry datapad.
Codex type: Lore
Codex location: Yavin IV: Temple of Sacrifice: High Sanctum
Codex coordinates: 332, 241
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 '[OPERATION] The Temple of Sacrifice' to gain access to this codex entry
The Dark Legacy of Yavin 4: Part V codex entry datapad.
Codex type: Lore
Codex location: Yavin IV: Temple of Sacrifice: High Sanctum
Codex coordinates: 476, 408
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 '[OPERATION] The Temple of Sacrifice' to gain access to this codex entry
The Emperor's Return? codex entry obtained from a conversation.
Codex type: Lore
Codex location: Yavin IV: Forgotten Terrace
Codex coordinates: 1558, -118
Faction: Empire
Class: Bounty Hunter - Imperial Agent - Sith Inquisitor - Sith Warrior
9Associated Achievement: None
Special Requirements: You must progress the mission 'The Enemy Within' to gain access to this codex entry
The Joint Task Force codex entry obtained from a conversation.
Codex type: Lore
Codex location: Yavin IV: Coalition Staging
Codex coordinates: 3343, 154
Faction: Republic
Class: Jedi Consular - Jedi Knight - Smuggler - Trooper
Associated Achievement: None
Special Requirements: You must progress the mission 'The Enemy Within' to gain access to this codex entry
The Two Revans codex entry obtained from a conversation.
Codex type: Lore
Codex location: Yavin IV: Temple Access
Codex coordinates: 1566, 570
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 'Fates Unsealed' to gain access to this codex entry