+Dysnomia is the sole known moon of the [dwarf planet](/wiki/dwarf-planet) [Eris](/wiki/Eris), discovered in 2005. Named for the Greek daemon of lawlessness, its orbit helped astronomers determine Eris's mass and refine understanding of outer solar system bodies.
+## See also
+- [Moon](/wiki/Moon)
+- [Trans-Neptunian object](/wiki/Trans-Neptunian_object)
+- [Pluto](/wiki/Pluto)