Quasi-satellite Dynamical State and Orbital Evolution
(309239) 2007 RW10 is currently following a quasi-satellite loop around Neptune. The object has been a quasi-satellite of Neptune for about 12,500 years and it will remain in that dynamical state for another 12,500 years. Prior to the quasi-satellite dynamical state, (309239) 2007 RW10 was an L5 Trojan and it will come back to that state soon after leaving its current quasi-satellite path. Its orbital inclination is the largest among known Neptune co-orbitals. It is also the largest known object trapped in the 1:1 mean motion resonance with any major planet.
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