Perturbed ephemeris below is based on elements from MPC 52907. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2456960.50000 2456948.0434546 53.33716 57.84802 9.97022 e q a Epoch (TT) 0.5562621 2.0011674 4.50980 2014/10/30.00
m1 = 5.3 + 5 log d + 22.5 log r