Scientists have discovered a minor planet, 2015 OU₁₉₄, in a gravitational partnership with Uranus, locked in a 3:4 mean motion resonance, preventing them from colliding or drifting apart.
This stable relationship has lasted for at least a million years and is predicted to continue for another 500,000 years into the future, suggesting it formed early in the Solar System's history.
The discovery sheds light on the complex dynamics of the outer Solar System, as no objects have been found in resonance between Uranus and Neptune before.
Additional candidates, like 2013 RG₉₈ and 2014 NX₆₅, show similar stable resonances with Uranus and Neptune, hinting at common gravitational partnerships in the region.