Planets

From Mass Effect Wiki

Planet Index	Milky Way	Clusters	Systems	Planets	Moons	Asteroids	Starships	Missions	Assignments	Locations

Planets are massive celestial bodies that orbit a star or stellar remnant. They are of many different sizes and compositions. Planets may have natural satellites (moons) and may or may not be inhabited. Every planet has a unique blurb, but most of them cannot be interacted with. Travel from planet to planet requires use of the Galaxy Map.

Within each solar system, there will only be one location to land/dock. Most often this will be a planet, but it may be a moon or ship instead. Many planets can be scanned from space for minerals or other collectibles, but not landed upon. There are even asteroids containing valuable metals or other objects hidden in the belts.

Main article: Mass Effect System Guide

For an alphabetical list of planets see Category:Planets (or the Planet Index).

[edit] Game Worlds

[edit] Argos Rho

[edit] Armstrong Nebula

[edit] Artemis Tau

[edit] Attican Beta

[edit] Exodus Cluster

[edit] Gemini Sigma

[edit] Hades Gamma

[edit] Hawking Eta

[edit] Horse Head Nebula

[edit] Kepler Verge

[edit] Local Cluster

[edit] Maroon Sea

[edit] Pangaea Expanse

[edit] Sentry Omega

[edit] Serpent Nebula

[edit] Styx Theta

[edit] Voyager Cluster

[edit] Homeworlds

• Dekuuna — Elcor
• Irune — Volus
• Kahje — Hanar
• Palaven — Turian
• Thessia — Asari
• Tuchanka — Krogan

[edit] Background Worlds

• Akuze
• Amaterasu
• Camala
• Elysium
• Juxhi
• Shanxi
• Sidon

[edit] Properties

Mass Effect provides the radius of planets (in kilometers), and for planets with a solid surface it further provides the surface gravity (as a proportion of Earth's surface gravity). From these, it is possible to derive the mass (and density) for any planet with a surface gravity.

Isaac Newton's gravitational constant is 6.67×10^-11 m³kg^-1s^-2 which would be 6.67×10^-20 km³kg^-1s^-2 when dimensioned for kilometers. Earth's surface gravity, g, is 9.81 ms^-2, which is 9.81×10^-3 kms^-2. According to Newton's Law of Universal Gravitation, the mass of any body, M, is ar²G^-1, where a is gravity, r the radius, and G the gravitational constant. Since the gravity of a planetary body in Mass Effect, s, is given as a proportion of Earth's, a = sg. Therefore, given values for s (dimensionless) and r (in km), and given that the mass of the Earth is 5.9736×10²⁴ kg, the mass of a planet will be: