|Discovered by||Scott S. Sheppard|
David C. Jewitt
Yanga R. Fernandez
Eugene A. Magnier
|Discovery site||Mauna Kea Observatory|
|Discovery date||26 November 2000|
|S/2000 J 10|
|Orbital characteristics |
|Epoch 27 April 2019 (JD 2458600.5)|
|Observation arc||17.46 yr (6,376 days)|
|0.1604721 AU (24,006,280 km)|
|0° 28m 25.54s / day|
|Inclination||164.25379° (to ecliptic)|
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.
Chaldene is about 3.8 kilometres in diameter, and orbits Jupiter at an average distance of 22,713,000 km in 759.88 days, at an inclination of 167° to the ecliptic (169° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2916.
It belongs to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.