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Two comet system


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Some celestial bodies can be synchronized. For instance, some asteroids share Jupiter's orbit and are 60° before or after it. I've not heard of 180° positions.

Some moons of Saturn have synchronized their periods (1:2:4 ratio from memory).

 

But I don't expect comets to do it:

- They are erratic by nature and won't stay on one orbit long enough

- They are too light to synchronize an other.

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A comet has an extremely eccentric orbit. It comes in close to the sun, accelerating very fast. Then they are flung far out into space. They may sit our beyond the planets for hundreds or thousands of years. The more famous comets come back with predictable shorter orbits (Halley's Comet orbits every 75 years)

Since a comet's orbit is so eccentric, almost like a random object falling into our solar system to be flung back out into space, many comets may have similar orbits but it is very unlikely that 2 would have the same orbit.

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