Perturbed ephemeris below is based on elements from MPEC 2021-P47. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2461240.50000 2461249.6150013 21.22047 301.13383 11.48685 e q a Epoch (TT) 0.6757104 0.9665308 2.98046 2026/07/19.00
m1 = 17.5 + 5 logΔ + 10.0 log r