Kalyke imaged by the Canada-France-Hawaii Telescope in December 2001
|Discovered by||Scott S. Sheppard|
David C. Jewitt
Yanga R. Fernandez
Eugene A. Magnier
|Discovery site||Mauna Kea Observatory|
|Discovery date||23 November 2000|
|S/2000 J 2|
|Orbital characteristics |
|Epoch 27 April 2019 (JD 2458600.5)|
|Observation arc||16.34 yr (5,967 days)|
|0.1614179 AU (24,147,770 km)|
|0° 28m 10.57s / day|
|Inclination||165.93730° (to ecliptic)|
Kalyke //, also known as Jupiter XXIII, 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 2.
From infrared thermal measurements by the WISE spacecraft, Kalyke's albedo is measured at 2.9%, corresponding to a diameter of 6.9 kilometres. It orbits Jupiter at an average distance of 23,181,000 km in 721.021 days, at an inclination of 166° to the ecliptic (165° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2140.
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°.