- Pfhreak wrote:
- Jupiters moons are in 1:1 resonance because of their low eccentricity.
Hang on, what do you mean by resonance? Usually it implies that an orbital periods is a factor of another. (or at least... sort of).
Callisto takes almost twice as long as Ganymede to orbit Jupiter.
Ganymede takes twice as long as Europa to orbit Jupiter.
Europa takes twice as long as Io to orbit Jupiter.
So we say that Europa and Io are in an 1:2 resonance.
Or we can say that Ganymede and Europa are in a 1:2 resonance.
Etcetera.
The Jovian moons are in a
1:2:4:8 resonance, for Io, Europa, Ganymede, and Callisto, respectively.
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