Dysnomia is the only known moon of the Kuiper Belt dwarf planet Eris. It’s the second-largest known moon of a dwarf planet, after Pluto’s moon Charon. It is named Dysnomia after the daughter of the Greek goddess Eris. The Ancient Greek word Δυσνομία means anarchy/lawlessness.
Eris is the bright object in the center of the image. Dysnomia is the smaller dot at about 8 o’clock.
Image Credit: NASA