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The average density of Ganymede, 1.936 g/cm 3 (a bit greater than Callisto's), suggests a composition of about equal parts rocky material and mostly water ices. [9] Some of the water is liquid, forming an underground ocean. [46] The mass fraction of ices is between 46 and 50 percent, which is slightly lower than that in Callisto. [47]
The largest, Ganymede, is the largest moon in the Solar System and surpasses the planet Mercury in size (though not mass). Callisto is only slightly smaller than Mercury in size; the smaller ones, Io and Europa, are about the size of the Moon. The three inner moons — Io, Europa, and Ganymede — are in a 4:2:1 orbital resonance with
Many TNOs are often just assumed to have Pluto's density of 2.0 g/cm 3, but it is just as likely that they have a comet-like density of only 0.5 g/cm 3. [ 4 ] For example, if a TNO is incorrectly assumed to have a mass of 3.59 × 10 20 kg based on a radius of 350 km with a density of 2 g/cm 3 but is later discovered to have a radius of only 175 ...
Ganymede and Titan are additionally larger than the planet Mercury, and Callisto is almost as large. All of these moons are ellipsoidal. That said, the two moons larger than Mercury have less than half its mass, and it is mass, along with composition and internal temperature, that determine whether a body is plastic enough to be in hydrostatic ...
The seven largest natural satellites in the Solar System (those bigger than 2,500 km across) are Jupiter's Galilean moons (Ganymede, Callisto, Io, and Europa), Saturn's moon Titan, Earth's moon, and Neptune's captured natural satellite Triton. Triton, the smallest of these, has more mass than all smaller natural satellites together.
This is a list of named geological features, except craters, on Ganymede, a moon of Jupiter. The list is complete as of August 2022. The list is complete as of August 2022. Catenae (crater chains)
The three-body Laplace resonance exhibited by three of Jupiter's Galilean moons. Conjunctions are highlighted by brief color changes. There are two Io-Europa conjunctions (green) and three Io-Ganymede conjunctions (grey) for each Europa-Ganymede conjunction (magenta).
Ganymede most commonly refers to: Ganymede (mythology) , Trojan prince in Greek mythology, or his nephew of the same name Ganymede (moon) , Jupiter's largest moon, named after the mythological character