Perturbed ephemeris below is based on elements from MPEC 2020-SI8. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2461120.50000 2461117.7206204 335.32603 58.90183 2.60645 e q a Epoch (TT) 0.6007439 1.2571449 3.14872 2026/03/21.00
m1 = 12.5 + 5 logΔ + 25.0 log r(t - 25)