Perturbed ephemeris below is based on unperturbed elements from MPC 58538. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2455920.50000 2455938.7720261 179.62162 279.73927 18.26318 e q a Epoch (TT) 0.6679193 1.0074256 3.03368 2011/12/25.00
m1 = 12 + 5 log d + 50 log r