|Number of Sattelites||1|
|Discovered by|| M. E. Schwamba|
M. E. Brown
D. L. Rabinowitz
|Date of Discovery||17 July 2007|
S/2007 (225088) 1 Edit
The slow rotation rate of 2007 OR10, compared to the other TNOs, raised the possibility of a satellite that slowed down the rotation via tidal dissipation. In 2016, analysis of Hubble images of 2007 OR10 taken in 2010 revealed a satellite around 300 km in diameter and orbiting at a distance of at least 15,000 km. It was announced at the DPS48 meeting on 17 October 2016. The satellite is probably too small and dark to affect size estimates for 2007 OR10. Further analysis from May 2017 confirms this orbiting moon.