Perturbed ephemeris below is based on elements from MPEC 2011-V31. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2444520.50000 2444508.0946497 219.88783 130.30525 32.58338 e q a Epoch (TT) 0.3137705 3.2003330 4.66365 1980/10/08.00
m1 = 10.5 + 5 logΔ + 10.0 log r(t - 200)