Ixion's orbit dances with Neptune's gravity
Ixion, a distant dwarf planet candidate, orbits in a stable 2:3 resonance with Neptune, a gravitational dance that reveals how giant planets sculpted our solar system billions of years ago.
Ixion, a large dwarf planet candidate in the Kuiper Belt, performs a precise gravitational dance with Neptune. This distant object, about 650 kilometers wide, completes two orbits for every three Neptune makes, a 2:3 resonance that stabilizes its path. This protective orbital lock, similar to Pluto's, prevents chaotic encounters that could eject it from the solar system. Such resonances are crucial clues to how giant planets migrated long ago, shaping the outer solar system and safeguarding objects like Ixion. Its reddish surface, possibly from radiation-formed organic compounds, hints at complex chemistry in the frigid depths.