Perturbed ephemeris below is based on elements from MPEC 2023-D72. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2459320.50000 2459325.3459969 82.24475 19.48885 61.88531 e q a Epoch (TT) 0.9989632 6.8123828 6570.35495 2021/04/16.00
m1 = -3.5 + 5 logΔ + 20.0 log r(t - 150)