Perturbed ephemeris below is based on elements from MPC 66922. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2457520.50000 2457533.1149439 16.32329 40.47507 13.42603 e q a Epoch (TT) 0.4159186 1.9933196 3.41274 2016/05/12.00
m1 = 15.7 + 5 log d + 10.0 log r