Harpalyke (pronounced "har PAL uh kee") is a natural satelliteofJupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard, et al. in 2000, and given the temporary designation S/2000 J 5. Harpalyke is about 4.4 kilometers in diameter, and orbits Jupiter at an average of 21,105,000 kilometers. It is also designated as Jupiter XXII.
It belongs to the Ananke group, retrograde irregular moons which orbit Jupiter between 19.3 and 22.7 Gm, at inclinations of roughly 150°.