As per the model, Pluto's orbit would have a much larger radius than Earth's orbit.
Earth's orbit defines a two-dimensional plane which we call the ecliptic. It takes roughly 365 days for the earth to go around the sun once.
The distance between the sun and earth is 149,600,000 kilometers and the distance between the sun and Pluto is 5.9 billion kilometers. The gravitational pull decreases with an increase in distance.
So, the gravitational pull of the sun on Pluto is much less than its pull on the earth. So, Pluto's orbit would have a much larger radius than Earth's orbit.
Learn more about Earth's Orbit here:
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