Perturbed ephemeris below is based on unperturbed elements from MPC 55521. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2456200.50000 2456182.9734933 15.69471 351.96164 15.73560 e q a Epoch (TT) 0.5934920 1.4971329 3.68291 2012/09/30.00
m1 = 12.0 + 5 logΔ + 14.0 log r