The moon of Jupiter – Kallichore (XLIV) – was previously temporarily designated as S/2003 J11. It was discovered in March 2003 by S.S. Sheppard. This discovery was achieved by 8.3-m Subaru telescope atop Mauna Kea (Hawaii). You can read additional details in The International Astronomical Union Circular (→IAU).
    Kallichore is one of four new satellites Jupiter's new satellites discovered since the →Voyager-2 Jupiter system fly-by which occured 24 years ago (1979). With this moon, the astronomer discovered also: S/2003 J9, S/2003 J10 and S/2003 J12. 
    The moon is in elliptical retrograde orbit (→eccentricity e = 0.2503) with a →semimajor axis a = 23,288,000 km. At pericenter (closest to the planet) Kallichore is separated from the Jupiter a distance of q = 17,459,014 km. At apocenter (furthest from the planet) this moon is separated from the Jupiter a distance of Q = 29,116,986 km. In future these parameters may vary due to a large orbital distance from Jupiter and the orbital motion being disturbed by the Sun and other factors. Perhaps it is a captured asteroid (with a microscopic mass: ~1.4987×10¹³ kg – it equals 490 times less than a mountain like Giewont!), and in future will possibly return to heliocentric orbit.

    The orbital period is over 2 earthly years, which means that the average speed of its celestial motion is only 0°29'38'' per day. When this motion was detected and compared to the changes in Jupiter's position, this body was classified as a true planetary satellite (and not a distant celestial body with its position projected near the planet).
    Other obstacle in detecting this moon earlier was its brightness of only 23.7^m (over 12 million times fainter than the faintest stars visible to naked eye). For comparison: Jupiter's brightness is about –2.7^m, so Kallichore is shining fainter by about 26.4^m. The corresponding difference in brightness is over 36 billion times!