, provisionally known as , is a resonant trans-Neptunian object that resides in the Kuiper belt in the outermost region of the Solar System. It was discovered on August 19, 2001 by Marc W. Buie. is a plutino, meaning that it is locked in a 3:2 orbital resonance with Neptune, much like Pluto.
In 2012, the size of was estimated based on thermal radiation data obtained with the Herschel Space Telescope. The result was 408.2 km.
In the visible light, the object appears to have a neutral or slightly red color.
When first discovered, was calculated to have an absolute magnitude (H) of 4.7. Light-curve-amplitude analysis from 2008 showed only small deviations, which suggested that could be a spheroid about in diameter with small albedo spots and hence a dwarf planet. It is not included in the same authors' list of dwarf-planet candidates from 2010 because having an absolute magnitude of 5.4 and assumed albedo of 0.1, it would be less than the cut-off size of (the same criteria as in the first paper).