Perturbed ephemeris below is based on elements from MPC 79019. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2458400.50000 2458404.3899778 338.92483 268.79595 31.76865 e q a Epoch (TT) 0.5703913 1.5334463 3.56940 2018/10/09.00
m1 = 15.7 + 5 logΔ + 15.0 log r