Perturbed ephemeris below is based on elements from MPEC 2022-PB4. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2461880.50000 2461871.1268793 22.23766 36.26959 3.86569 e q a Epoch (TT) 0.6492282 1.2132000 3.45866 2028/04/19.00
m1 = 9.5 + 5 logΔ + 14.0 log r(t - 40)