Chaldene, also known as Jupiter XXI, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard, in 2000, and given the temporary designation S/2000 J 10. Wikipedia
Discovered: November 23, 2000
Orbital period: 699 days
Mean diameter: 4 km
Gravity: 0.001 m/s²
Discoverers: Scott S. Sheppard, David C. Jewitt, and Yanga R. Fernández