Perturbed ephemeris below is based on elements from MPEC 2023-C45. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2458840.50000 2458838.5102994 67.81817 142.96194 8.63250 e q a Epoch (TT) 0.4765489 2.6606582 5.08292 2019/12/23.00
m1 = 14.5 + 5 logΔ + 10.0 log r