Pheiros is a Location in Mass Effect 3. Pheiros is located in the Gemmae system within the Apien Crest cluster. Locations can be explored while you traverse the galaxy. Locations may vary in size or scope, and may or may not have Missions associated to them. Some of them can only be scanned from atop the Normandy, while others can be landed on.
Pheiros is an asteroid towed near the class-B blue giant Gemmae to serve as a terrestrial military base in a system devoid of planets. A vast array of solar collectors absorb energy from the star and beam it to receptors near the tidally locked asteroid's terminator zone. Beneath the surface, dozens of particle accelerators generate antiprotons for starship fuel.
The Reapers sent a substantial force to Gemmae's system but found that the turians were capable and prepared to defend their armada's fuel source. Warning messages say the Reapers are still present in the system, awaiting reinforcements. At present, the turians can still refuel--but only because they committed forces here that could otherwise have defended Palaven.
Orbital Distance: 160.1 km
Orbital Period 479.2 Earth Years
Keplerian Ratio 1.017
Radius 1,401 km
Day Length 110.2 Earth Hours
Atm. Pressure Trace
Surface Temp 496°C
Surface Gravity 0.19 g
Mass 0.009 Earth Masses
Pheiros Missions and Assignments
Pheiros Notes and Tips
- Notes and tips go here