Mnemosyne

ME1 · ME2 · ME3 · Andromeda · Series Legendary Editions ME1 · ME2 · ME3
Location	Milky Way / Hawking Eta / Thorne
Mnemosyne
Basic Information
Type(s)	Lore
Series	Mass Effect
In-Game
Mass Effect 2 Resources Initial Scan Result: Moderate Element Approx. Amount Approx. Value Palladium Medium 6,300 Platinum Medium 8,600 Iridium Low 4,700 Element Zero None 0
Location Information
Atmospheric Pressure	0.32
Day Length	18.7 Earth Hours
Orbital Distance	0.81 AU (from Thorne)
Orbital Period	0.8 Earth Years
Radius	72,541 km
Keplerian Ratio	0.83
Surface Gravity	0.61 g
Surface Temp.	1,500 °C
Mass	37.0 Jupiter Masses
Satellites	≥ 1
Featured in...
Mass Effect 2

Mnemosyne is a brown dwarf of approximately 37 Jupiter-masses. It is young enough that some nuclear fusion still occurs within its depths. It is luminous, and radiates more heat than it receives from the star Thorne, with an atmospheric temperature in excess of 1,800 degrees Kelvin (1,500 degrees Celsius).

Early probes of Thorne showed evidence of a minor gravitic anomaly in the northern hemisphere. This area of unexpectedly low mass did not move with the prevailing wind patterns. While an investigation was planned by the Besaral Institute of Planetary Science, the school ultimately sent an expedition to study the famed "deep anomalies" of the gas giant Ploba instead.