Perturbed ephemeris below is based on elements from MPC 65938. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2456040.50000 2456027.5122038 200.48797 160.63481 13.48976 e q a Epoch (TT) 0.6626044 1.3744396 4.07367 2012/04/23.00
m1 = 7.5 + 5 log d + 30 log r(t - 80)