Perturbed ephemeris below is based on elements from MPEC 2023-D72. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2459720.50000 2459739.6381367 351.20126 199.93898 53.62862 e q a Epoch (TT) 0.9957923 4.2424154 1008.25076 2022/05/21.00
m1 = -0.5 + 5 logΔ + 15.0 log r(t - 60)