Perturbed ephemeris below is based on elements from MPC 65937. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2458480.50000 2458466.4056358 69.26805 358.30503 1.33790 e q a Epoch (TT) 0.4432419 2.0059410 3.60290 2018/12/28.00
m1 = 14.5 + 5 logΔ + 10 log r(t - 200)