Perturbed ephemeris below is based on elements from MPEC 2023-D72. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2459480.50000 2459488.5754452 20.34789 213.70649 79.96710 e q a Epoch (TT) 1.0007111 4.7028858 2021/09/23.00
m1 = 4.0 + 5 logΔ + 12.5 log r(t - 120)