Perturbed ephemeris below is based on elements from MPEC 2021-W31. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2461560.50000 2461547.0112654 142.17800 95.21888 11.32115 e q a Epoch (TT) 0.5347473 1.5725357 3.37996 2027/06/04.00
m1 = 16.5 + 5 logΔ + 10.0 log r(t - 30)