Mass Effect System Guide

Hydra System

 * Scanable from Ship
 * UNC: Turian Insignias
 * UNC: Valuable Minerals, 1x Gas
 * Missions on Metgos
 * UNC: Distress Call
 * UNC: Valuable Minerals
 * UNC: Turian Insignias

Phoenix System

 * Scanable from Ship
 * UNC: Prothean Data_Discs
 * UNC: Valuable Minerals, 1x Rare, 1x Light Metal
 * Missions on Tuntau
 * UNC: Asari Writings
 * UNC: Valuable Minerals, 1x Heavy Metal
 * Wrex: Family Armor

Gagarin System

 * Scanable from Ship


 * Missions on Rayingri

Grissom System

 * Unlocked as part of UNC: Geth Incursions
 * Scanable from Ship


 * Missions on Solcrum

Hong System

 * Scanable from Ship


 * Missions on Casbin

Tereshkova System

 * Scanable from Ship


 * Missions on Antibaar

Vamshi System

 * Scanable from Ship


 * Missions on Maji

Athens System

 * Scanable from Ship


 * No Landing Missions

Knossos System

 * Scanable from Ship


 * Missions on Therum

Macedon System

 * Scanable from Ship


 * Missions on Sharjila

Sparta System

 * (Unlocked as part of UNC: Missing Marines.)
 * Scanable from Ship


 * Missions on Edolus

Hercules System

 * Scanable from Ship


 * Missions on Eletania

Theseus System

 * Scanable from Ship


 * Missions on Feros

Utopia System

 * Scanable from Ship


 * Missions on Eden Prime

Han System

 * Unlocked as part of UNC: Hostile Takeover
 * Scanable from Ship


 * Missions on Mavigon

Ming System

 * Scanable from Ship


 * Missions on MSV Worthington

Antaeus System

 * Scanable from Ship


 * Missions on Trebin

Dis System

 * Unlocked as part of UNC: Hostile Takeover
 * Scanable from Ship


 * Missions on Klensal

Farinata

 * Scanable from Ship


 * Missions on MSV Ontario

Century System

 * Scanable from Ship


 * Missions on Presrop

Fortuna System

 * Unlocked as part of UNC: Hostile Takeover.
 * Scanable from Ship


 * Missions on Amarantine

Pax System

 * Scanable from Ship


 * Missions on Noveria

Strenuus System

 * Unlocked as part of UNC: Privateers.
 * Scanable from Ship


 * Missions on Xawin

Sol System

 * (Home system of humanity.)

Caspian System

 * Scanable from Ship


 * Missions on MSV Cornucopia

Matano System

 * Scanable from Ship


 * Missions on Chasca

Vostok System

 * Scanable from Ship


 * Missions on Nodacrux

Refuge System

 * Scanable from Ship


 * Missions on Ilos

Hoc System

 * Unlocked when council gives coordinates for Virmire
 * Scanable from Ship


 * Missions on Virmire

Widow System

 * (Home of the Citadel.)

Columbia System

 * (Unlocked as part of UNC: Hades' Dogs.)

Yangtze System

 * (Unlocked as part of UNC: Cerberus.)