Perturbed ephemeris below is based on elements from MPC 62583. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2457400.50000 2457399.0951619 173.31190 20.99372 3.60906 e q a Epoch (TT) 0.3724347 2.1871458 3.48513 2016/01/13.00
m1 = 5.0 + 5 log d + 20.0 log r(t + 25)