The Bruce Murray Space Image Library
Eris and its newly discovered moon
Filed under pretty pictures, many worlds, Eris, dwarf planets beyond Neptune, optical telescopes
This is the discovery image of the moon Dysnomia of dwarf planet Eris, as seen on September 10, 2005. The discovery of the moon is important because it will permit scientists to determine the mass of Eris.
W.M. Keck Observatory
Original image data dated on or about September 10, 2005
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