(307261) 2002 MS4 is a large classical Kuiper belt object, the second-largest known object in the Solar System without a name, after 2007 OR10. It was discovered in 2002 by Chad Trujillo and Michael Brown.Brown's website lists it as nearly certain to be a dwarf planet. The Spitzer Space Telescope estimated it to have a diameter of 7005726000000000000♠726±123 km.
| Attributes | Values |
|---|---|
| rdfs:comment |
|
| absolute magnitude |
|
| apparent magnitude |
|
| average speed (kmh) |
|
| discovery date |
|
| discoverer | |
| epoch |
|
| former name |
|
| orbital period (s) |
|
| temperature (K) |
|