Orbital convergence of secular angles for the nominal orbits of 2016 GO11 and (525) Adelaide: (i) difference in longitude of node δΩ = Ω_{2016 GO11} − Ω₅₂₅ (red line), (ii) difference in longitude of perihelion δϖ = ϖ_{2016 GO11} − ϖ₅₂₅ (blue line)(osculating values in both cases). The abscissa is time to the past (in kyr). At approximately 500 kyr ago, both secular angles of 2016 GO11 converge to the respective values of (525) Adelaide.