Kalyke , also known as , is a retrograde irregular satellite of

Jupiter Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a Jupiter mass, mass more than 2.5 times that of all the other planets in the Solar System combined a ...

. It was discovered by a team of astronomers from the

University of Hawaii A university () is an educational institution, institution of tertiary education and research which awards academic degrees in several Discipline (academia), academic disciplines. ''University'' is derived from the Latin phrase , which roughly ...

led by Scott S. Sheppard in 2000, and given the temporary designation .MPEC 2001-A28: ''S/2000 J 2, S/2000 J 3, S/2000 J 4, S/2000 J 5, S/2000 J 6''
2001 January 5 (discovery and ephemeris) From infrared thermal measurements by the WISE spacecraft, Kalyke's

albedo Albedo ( ; ) is the fraction of sunlight that is Diffuse reflection, diffusely reflected by a body. It is measured on a scale from 0 (corresponding to a black body that absorbs all incident radiation) to 1 (corresponding to a body that reflects ...

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 766.61 days, at an inclination of 166° to the

ecliptic The ecliptic or ecliptic plane is the orbital plane of Earth's orbit, Earth around the Sun. It was a central concept in a number of ancient sciences, providing the framework for key measurements in astronomy, astrology and calendar-making. Fr ...

(165° to Jupiter's equator), in a retrograde direction and with an

eccentricity Eccentricity or eccentric may refer to: * Eccentricity (behavior), odd behavior on the part of a person, as opposed to being "normal" Mathematics, science and technology Mathematics * Off-Centre (geometry), center, in geometry * Eccentricity (g ...

of 0.2140. It was named in October 2002 after the Greek mythological figure Kalyke or Calyce.IAUC 7998: ''Satellites of Jupiter''
2002 October 22 (naming the moon) Kalyke-WISE

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°. Kalyke is redder in color (B−V=0.94, V−R=0.70) than other moons of the Carme group, suggesting that it is a captured

centaur A centaur ( ; ; ), occasionally hippocentaur, also called Ixionidae (), is a creature from Greek mythology with the upper body of a human and the lower body and legs of a horse that was said to live in the mountains of Thessaly. In one version o ...

or TNO, or a remnant of such an object that collided with the Carme group progenitor.

Notes

References

{{DEFAULTSORT:Kalyke (Moon) Carme group Moons of Jupiter Irregular satellites Discoveries by Scott S. Sheppard Astronomical objects discovered in 2000 Moons with a retrograde orbit