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Systems are sets of gravitationally bound non-stellar objects in orbit around one or multiple stars.

Original Mass Effect Trilogy[]

This portion of the article lists the various star systems in Mass Effect, Mass Effect 2, and Mass Effect 3 accessible via the Galaxy Map organized by cluster. Each system contains at least one object that the player can travel to, such as a planet, moon, space station, starship, or mass relay.

Main article: Mass Effect System Guide

For an alphabetical list of systems see Category:Systems.

Mass Effect[]

Argos Rho[]

Asteroid belt
Asteroid belt

Armstrong Nebula[]

Asteroid belt
Asteroid belt
Asteroid belt

Artemis Tau[]

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Attican Beta[]

Exodus Cluster[]

Gemini Sigma[]

Asteroid belt

Hades Gamma[]

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Hawking Eta[]

Asteroid belt
Verr

Horse Head Nebula[]

Asteroid belt

Kepler Verge[]

Asteroid belt

Local Cluster[]

Earth (Luna)
Asteroid belt

Maroon Sea[]

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Pangaea Expanse[]

Sentry Omega[]

Serpent Nebula[]

Asteroid belt

Styx Theta[]

Asteroid belt
Asteroid belt

Voyager Cluster[]

Asteroid belt
Asteroid belt

Mass Effect 2[]

Caleston Rift[]

Asteroid belt
Asteroid belt

Crescent Nebula[]

Asteroid belt
Asteroid belt

Eagle Nebula[]

Asteroid belt
Asteroid belt
Asteroid belt

Far Rim[]

Asteroid belt

Hades Nexus[]

Asteroid belt

Hawking Eta[]

Asteroid belt
Verr

Hourglass Nebula[]

Asteroid belt

Ismar Frontier[]

Faia

Krogan DMZ[]

Asteroid belt

Local Cluster[]

Earth (Luna)
Asteroid belt

Minos Wasteland[]

Nubian Expanse[]

Omega Nebula[]

Asteroid belt
Asteroid belt

Pylos Nebula[]

Asteroid belt

Rosetta Nebula[]

Serpent Nebula[]

Asteroid belt

Shadow Sea[]

Sigurd's Cradle[]

Mil
Asteroid belt

The Phoenix Massing[]

The Shrike Abyssal[]

Thal
Asteroid belt
Asteroid belt

Titan Nebula[]

Vallhallan Threshold[]

Asteroid belt
Asteroid belt

Viper Nebula[]

Asteroid belt

Mass Effect 3[]

Aethon Cluster[]

Asteroid belt
Asteroid belt

Annos Basin[]

Asteroid belt

Apien Crest[]

Arcturus Stream[]

Asteroid belt

Argos Rho[]

Asteroid belt
Asteroid belt

Athena Nebula[]

Asteroid belt
Asteroid belt
Asteroid belt

Attican Beta[]

Caleston Rift[]

Asteroid belt
Asteroid belt

Crescent Nebula[]

Asteroid belt
Asteroid belt

Exodus Cluster[]

Far Rim[]

Asteroid belt

Gemini Sigma[]

Asteroid belt

Hades Gamma[]

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Hades Nexus[]

Asteroid belt

Horse Head Nebula[]

Asteroid belt

Hourglass Nebula[]

Asteroid belt

Ismar Frontier[]

Faia

Kepler Verge[]

Asteroid belt

Kite's Nest[]

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Krogan DMZ[]

Asteroid belt

Local Cluster[]

Earth (Luna)
Asteroid belt

Minos Wasteland[]

Nimbus Cluster[]

Ninmah Cluster[]

Asteroid belt
Asteroid belt

Nubian Expanse[]

Perseus Veil[]

Asteroid belt

Petra Nebula[]

Asteroid belt

Pylos Nebula[]

Asteroid belt

Serpent Nebula[]

Asteroid belt

Shadow Sea[]

Sigurd's Cradle[]

Mil
Asteroid belt

Silean Nebula[]

Asteroid belt
Asteroid belt
Asteroid belt

The Shrike Abyssal[]

Thal
Asteroid belt
Asteroid belt

Vallhallan Threshold[]

Asteroid belt
Asteroid belt


Mass Effect: Andromeda[]

This portion of the article lists the various star systems in the Heleus Cluster in Mass Effect: Andromeda.

The Heleus Cluster is a seemingly resource-rich region of space in the outskirts of the Andromeda galaxy. It consists of 38 star systems and hundreds of planets.

Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt
Asteroid belt

Other Systems[]

These systems are known to exist in the Milky Way galaxy, but their locations are not specified via the Galaxy Map.

Properties[]

If a system has a planet for which the semi-major axis (i.e., in game terms, orbital radius) and orbital period are given, the star's standard gravitational parameter (Newton's gravitational constant multiplied by solar mass) may be derived from Kepler's Third Law. That is,


Mass Effect gives planetary orbital radius, a, in terms of AU, and orbital period, T, in terms of Earth years. From these, we can compute the mass of the star:


(This according to Astronomy Today, 3rd Edition, pub. Prentice Hall Inc., 1998; pp 48-9.)

In order to obtain the highest possible precision for the stellar mass, the attributes of the system planet with the highest precision orbital radius and period should be used in the computation.

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