(307261) 2002 MS₄

(307261) 2002 MS₄ is a large classical Kuiper belt object and a possible dwarf planet in the Kuiper belt, a region of icy planetesimals beyond Neptune. It was discovered in 2002 by Chad Trujillo and Michael Brown, and has precovery images back to 8 April 1954.
As of 2021, 2002 MS₄ is 46.4 AU from the Sun. It will reach perihelion, its closest point to the Sun, in 2123. At ~800 km in diameter.
As of 2023, it was not given its official name and the current largest unnamed object in the solar system.
Category:Dwarf Planet Candidate
Category:Objects with Transient Atmosphere
Category:Objects In Hydrostatic Equilibrium
Category:Outer Solar System Object
Category:Unnamed Objects
Category:Unnamed Minor Planets
Category:Numbered Objects
Category:Numbered Minor Planets