Perturbed ephemeris below is based on elements from MPEC 2025-XC7. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2462120.50000 2462115.9981359 119.87174 347.04196 19.94808 e q a Epoch (TT) 0.3262432 7.9886879 11.85693 2028/12/15.00
m1 = -14.0 + 5 logΔ + 28 log r