Perturbed ephemeris below is based on unperturbed elements from MPC 54986. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2455720.50000 2455727.9338040 3.33193 312.66961 10.23944 e q a Epoch (TT) 0.3794340 2.1226253 3.42047 2011/06/08.00
m1 = 7.5 + 5 log d + 15 log r