Perturbed ephemeris below is based on unperturbed elements from MPC 42666. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2455120.50000 2455116.9943227 235.95538 56.76305 4.38209 e q a Epoch (TT) 0.5620030 1.3634860 3.11300 2009/10/16.00
m1 = 5.5 + 5 log d + 25 log r(t - 33)