What type of orbit usually results from Disk-Driven Migration?
Answer
A nearly circular, orderly orbit
Disk-Driven Migration is characterized as a gentler mechanism compared to gravitational scattering. When a planet is still embedded within the original gas disk, the interplay of friction and gravitational torque exerted by the disk material causes a continuous inward spiral. Because the gas disk naturally smooths out variations and acts as a constant damping force, this process tends to preserve the planet's orbital shape over time. The result is that planets arriving via this method exhibit orbits that are remarkably close to being perfectly circular and orderly, showing little evidence of the violent, chaotic pushes associated with planetary encounters.
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