Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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, et al., in 2000, and given the temporary designation S/2000 J 10. Chaldene is about 3.8 kilometres in diameter, and orbits Jupiter at an average distance of 22,713 Mm in 699.327 days, at an inclination of 167° to the ecliptic, in a retrograde direction and with an eccentricity of 0.2916. It was named in October 2002 after Chaldene, the mother of Solymos by Zeus in Greek mythology.