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Ganymede may have experienced a period of heavy cratering 3.5 to 4 ... This encounter was designed to provide a gravity assist to reduce Juno's orbital period from 53 ...
Ganymede (Jupiter III), the third Galilean moon, is named after the mythological Ganymede, cupbearer of the Greek gods and Zeus's beloved. [41] Ganymede is the largest natural satellite in the Solar System at 5262.4 kilometers in diameter, which makes it larger than the planet Mercury – although only at about half of its mass [ 42 ] since ...
The other large moons (Io, Europa, Ganymede, and Triton) are generally believed to still be in equilibrium today. ... Orbital period about primary days: 27.32158 1. ...
2nd Ganymede flyby to initial encounter with Callisto: 2nd, 3rd and 4th Ganymede flyby to reduce the orbital period and inclination of Juice's orbit, followed by 1st flyby of Callisto. 193 days: 27 m/s (60 mph). Europa phase: Starting in July 2032, [8] there will be two <400 km (250 mi) flybys of Europa followed by another Callisto flyby.
Currently, Io, Europa, and Ganymede are in a 4:2:1 Laplace resonance with each other, with each inner moon completing two orbits for every orbit of the next moon out. In around 1.5 billion years, outward migration of these moons will trap the fourth and outermost moon, Callisto, into another 2:1 resonance with Ganymede. This 8:4:2:1 resonance ...
The physical and orbital characteristics of the moons vary widely. The four Galileans are all over 3,100 kilometres (1,900 mi) in diameter; [6] the largest Galilean, Ganymede, is the ninth largest object in the Solar System, after the Sun and seven of the planets, Ganymede being larger than Mercury. [7]
A mean-motion orbital resonance occurs when two bodies have periods of revolution that are a simple integer ratio of each other. It does not depend only on the existence of such a ratio, and more precisely the ratio of periods is not exactly a rational number, even averaged over a long period.
Orbital period ~230 million years ... The Galilean moons, consisting of Ganymede, Callisto, Io, and Europa. They are the largest moons of Jupiter and exhibit ...