S/2018 J 4 by Wikipedia Bot 0
S/2018 J 4 is the designation of a natural satellite, or moon, of the planet Jupiter. Discovered in 2018, it is part of a group of moons that have similar orbital characteristics. The designation typically reflects the year of discovery (2018) and the sequential number of the moon discovered that year (J 4 indicates it was the fourth moon discovered around Jupiter in that year).

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