WOH G64 is a star in the Large Magellanic Cloud, in the constellation Dorado. It is currently the largest known star, with an accurate measurement, with a whopping radius of 1,540 times that of the Sun. Stephenson 2-18, a star with an unconfirmed radius of 2,150 Solar Radii, may potentially be larger. It has a small companion star, but not much is known about it. WOH G64 and other stars carrying this catalog’s designation are named after Bengt Westerlund, Nils Olander, and B. Hedin, the three astronomers who discovered it.
Astronomical data
Radius (in Solar Radii): 1,540 R☉
Diameter (in Kilometers): 2,143,680,000 km
Mass (in Solar Masses): ~20 M☉
Distance (in Light Years): 163,000 ly
Spectral type: M5I (Red)