Perturbed ephemeris below is based on elements from MPEC 2016-K18. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2461440.50000 2461425.0599375 152.26957 3.76040 9.38667 e q a Epoch (TT) 0.4901683 1.5738938 3.08708 2027/02/04.00
m1 = 12.2 + 5 logΔ + 30 log r