Dysnomia is the daughter of Eris, and owns a planet. An orbit was named after her. Eris is also a planet, and so is Dysnomia. In the diagram, there is an orbit. The circle indicated is the orbit of Dysnomia, and a small orbit with her planet in around Eris'.
Dysnomia is the goddess of lawlessness. That means that she does well with order, such as this orbit.
Dysnomia is a perfectionist and a one-trick pony. She likes to keep things the way they are and when things have order and balance.
Dysnomia's official Greek name is Δυσνομια.