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Callisto is expected to be captured into the resonance in about 1.5 billion years, completing the 1:2:4:8 chain. [45] Like most other regular planetary moons, Callisto's rotation is locked to be synchronous with its orbit. [4] The length of Callisto's day, simultaneously its orbital period, is about 16.7 Earth days.
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 each other.
A montage of Jupiter and its four largest moons (distance and sizes not to scale) There are 95 moons of Jupiter with confirmed orbits as of 5 February 2024. [1] [note 1] This number does not include a number of meter-sized moonlets thought to be shed from the inner moons, nor hundreds of possible kilometer-sized outer irregular moons that were only briefly captured by telescopes. [4]
The Jupiter Icy Moons Explorer (Juice, formerly JUICE [3]) is an interplanetary spacecraft on its way to orbit and study three icy moons of Jupiter: Ganymede, Callisto, and Europa. These planetary-mass moons are planned to be studied because they are thought to have significant bodies of liquid water beneath their frozen surfaces, which would ...
Neptune’s innermost moon, Naiad, has a strange wobbling orbit that shifts in accordance with nearby Thalassa’s orbit. The inner moon’s orbit is tilted by five degrees and bobs up and down in ...
This is a list of named geological features on Callisto, a moon of Jupiter. This list is complete as of August 2022. This list is complete as of August 2022. Catenae
If conditions are clear, anyone with a pair of binoculars or a telescope may even be able to pick out details, such as Jupiter’s four largest moons — Ganymede, Callisto, Io and Europa. The ...
It will conduct 10 orbits over about a year before entering its second phase with two gravity assists of Callisto. In February 2038, Tianwen-4 will enter orbit around Callisto with an altitude of 300 km and an orbital period of 17.7 hours, and an impact probe will then be released to impact the surface of Callisto. [4] [3]