Perturbed ephemeris below is based on unperturbed elements from MPC 58781. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2456160.50000 2456153.0500007 181.94465 214.09085 14.00762 e q a Epoch (TT) 0.6994671 0.9318597 3.10069 2012/08/21.00
m1 = 11.3 + 5 log d + 30.0 log r(t - 10)