Main Page | See live article | Alphabetical index Leda Discovery Discovered by Charles Kowal Discovered in 1974 Orbital characteristics Mean radius ~11,094,000 km Eccentricity ~0.15 Orbital period ~240.5d Inclination 1.5 - 50.6° Is a satellite of Jupiter Physical characteristics Equatorial diameter 20 km Surface area km2 Mass 1.09×1016 kg Mean density 2.6 g/cm3 Surface gravity 0.073 m/s2 Rotation period ? Axial tilt ?° Albedo   Surface temp min mean max K K K Atmospheric pressure 0 kPa Leda (pronounced "LEE duh") is the smallest of Jupiter's named moonss. It was discovered by Charles Kowal at Mount Palomar in 1974, and is named after the queen of Sparta who was the mother of Castor, Polydeuces, Clytemnestra and Helen of Troy (Zeus, in the form of a swan, was the father). It was the last Jovian moon to be discovered by Earth-based observers. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.