SWEEPS-15 is an unconfirmed Hot Jupiter planet orbiting the star SWEEPS J175907.64-291023.7 every 0.541 Earth days, or every 12.9 hours. It is slightly larger than Jupiter, having a radius 1.37 times that of it. At the time of its discovery, it had one of the shortest orbital periods of any known planet, just behind SWEEPS-10.
At a distance of 22,000 light years, it is one of the most distant extrasolar planets found.