Perturbed ephemeris below is based on elements from MPC 56954. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2458680.50000 2458698.3430147 31.18292 184.03149 12.38831 e q a Epoch (TT) 0.3381093 2.3338182 3.52599 2019/07/16.00
m1 = 15.0 + 5 logΔ + 10.0 log r