WISEP J190648.47+401106.8 (abbreviated to W1906+40) is an L-type brown dwarf 54.7 light-years (16.8 parsecs) away in the constellation Lyra.

[2] In 2015 it was shown to have on its surface a storm the size of Jupiter's Great Red Spot.

The storm rotates around the star roughly every 9 hours and has lasted since at least 2013, when observations of the storm began.

[5] W1906+40 has an intrinsic brightness of 0.02% that of the Sun, a radius of 0.9 times that of Jupiter, and a surface temperature of 2,300 K. The star emits significant flares.

[6][7] This brown dwarf-related article is a stub.