Perturbed ephemeris below is based on elements from MPC 69416. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2454440.50000 2454428.7188968 207.16787 145.00065 19.86495 e q a Epoch (TT) 0.4342583 1.9494151 3.44577 2007/12/06.00
m1 = 14.5 + 5 logΔ + 10.0 log r