How big is Eris's moon Dysnomia?

Dysnomia, the moon of the dwarf planet Eris, has a diameter of about 700 kilometers (approximately 430 miles). This makes it roughly half the size of Eris itself, which has a diameter of about 2,326 kilometers (1,445 miles). Dysnomia is relatively large compared to other moons in the Kuiper Belt and orbits Eris at a distance of about 37,000 kilometers (23,000 miles).