WOH G64

WOH G64 is a large Yellow Hypergiant at 800 times larger than the sun. It is 28x more massive. It is 160,000 lightyears away in the LMC galaxy.  It was formerly considered to be the largest known star with a well-defined radius until it rapidly transitioned into a yellow hypergiant after a possible 30 year outburst, reducing its radius to 800 suns. Since 2016, the spectrum of WOH G64 exhibits features of both B[e] stars and yellow stars, which is interpreted as the spectral signature of a massive symbiotic binary consisting of a yellow hypergiant losing material to an accreting B-type star companion.