(574372) 2010 JO179 is a large, high-order resonant trans-Neptunian object in the outermost regions of the Solar System, probably somewhere between 600 and 900 kilometers (370 and 560 miles) in diameter. Long-term observations suggest that the object is in a meta-stable 5:21 resonance with Neptune. Other sources classify it as a scattered disc object. It is possibly large enough to be a dwarf planet. 2010 JO179 has not yet been imaged by high-resolution telescopes, so it has no known moons. The Hubble Space Telescope is planned to image 2010 JO179 in 2026, which should determine if it has significantly sized moons.
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