(225088) 2007 OR₁₀ is a binary trans-Neptunian object orbiting the Sun in the scattered disc, approximately 1,250 kilometers in diameter. It is the fifth-largest known body in the Solar System beyond the orbit of Neptune, and is the largest known body in the Solar System without a name.

Orbital period: 550 years

Discovered: July 17, 2007

Known satellites: 1 (300 km)

Mean diameter: 1253±43 km; 1535+75; −225 km (assuming equator-on view); 1280±210 km

Mean motion: 0° 0^m 6.48^s / day

Discoverers: Michael E. Brown, David L. Rabinowitz, Megan Schwamb