19521 Chaos

19521 Chaos is a cubewano, a Kuiper-belt object not in resonance with any planet. Chaos was discovered in 1998 by the Deep Ecliptic Survey with Kitt Peak's 4 m telescope. Its albedo is 0.050+0.030 
−0.016, making it, with its absolute magnitude (H) of 4.8, 600+140
−130 km in diameter.
On 20 November 2020, Chaos occulted a magnitude 16.8 star. Three observers detected the occultation, finding that the object is likely smaller than 600 km in diameter. Another occultation was recorded on 14 January 2022; full results on size, shape, geometric albedo, and the spin-axis orientation have not been released.
Category:TNO
Category:Cryasteroid
Category:Cubewano
Category:Kuiper Belt Object
Category:Objects Not in Hydrostatic Equilibrium
Category:Kuiper Belt Object
Category:Classical Kuiper Belt Object
Category:Hot Classical Kuiper Belt Object