There are eight datacrons on Corellia, however the purple mastery datacron has two locations, dependent on your faction. All eight datacrons require some finesse with platforming, and the green matrix shard requires a special item. They provide moderate attribute bonuses and two matrix shards. Seven are required for the Corellia Datacron Master achievement.
The Corellia green matrix shard datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Axial Park: Deserted Thoroughfare
Codex coordinates: 699, -1889
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master
Special Requirements: Requires MGGS
MGGS
To grapple to the tunnel containing the green matrix shard datacron you must first purchase a MGGS from Lain-Ricie for 10,000 credits. This will allow you to interact with the magnetic grapple point.
Lain-Ricie the item vendor.
Vendor item: MGGS
Vendor location: Alderaan: The Juran Mountains
Vendor coordinates: 1911, 729
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
The Corellia blue matrix shard datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Labor Valley: Derelict Service Area
Codex coordinates: -2424, -1063
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master
The Corellia +4 blue mastery datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Government District
Codex coordinates: 3143, -1792
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master
The Imperial Corellia +4 purple mastery datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Incorporation Islands
Codex coordinates: -2404, 2948
Faction: Empire
Class: Bounty Hunter - Imperial Agent - Sith Inquisitor - Sith Warrior
Associated Achievement: Corellia Datacron Master
The Republic Corellia +4 purple mastery datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Blastfield Shipyards
Codex coordinates: 702, 1719
Faction: Republic
Class: Jedi Consular - Jedi Knight - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master
The Corellia +4 yellow presence datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Government District: Port Pevaria
Codex coordinates: 3428, -3210
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master
Special Requirements: While this datacron is accessible to both factions, Port Pevaria is a republic base and has several republic enemies that will attack you if you are a non-stealthed Imperial class. This can make the datacron slightly more difficult to unlock as an Imperial character.
The Corellia +4 orange mastery datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Labor Valley
Codex coordinates: -2661, -3116
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master
The Corellia +4 red mastery datacron.
Codex type: Achievement: Datacrons
Codex location: Corellia: Labor Valley
Codex coordinates: -2755, -2008
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: Corellia Datacron Master