Leda (moon)
Leda (pronounced "LEE duh") is the smallest of Jupiter's named moons. 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.
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