Who owns Planet IX?

Excuse me, but could you clarify for me who exactly owns Planet IX? Is it a private entity, a government organization, or perhaps a collective of individuals? Additionally, how did they come to acquire ownership of this celestial body, and what rights and responsibilities do they hold in relation to it? Is there any potential for conflict or controversy surrounding its ownership, and how are these issues being addressed? Thank you for your time and assistance in helping me understand this matter.