Perturbed ephemeris below is based on unperturbed elements from MPC 54166. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2455960.50000 2455969.2688990 172.60380 195.39763 31.91037 e q a Epoch (TT) 0.7070499 1.0304851 3.51761 2012/02/03.00
m1 = 8.7 + 5 logΔ + 18.5 log r