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What distances would be involved in this planetary system?

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So, I have five habitable planets in my planetary system. These five planets are all in the Goldilocks zone, orbiting their star. However, only two are relevant to this question. The star is exactly the size of our Sun, and is identical in every way. Also, both planets have surface gravities 0.8 times that of Earth. Centered on Earth's orbit, I would like a pair of planets to have an orbit similar to Janus and Epimetheus

So, how close to each other's orbit do these two planets need to be to have this orbit? What is the closest their orbits could be and still have this work in the long term?

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This post was sourced from https://worldbuilding.stackexchange.com/q/35775. It is licensed under CC BY-SA 3.0.

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