Perturbed ephemeris below is based on elements from MPEC 2023-HD1. Epoch (TT/JD) T (TT/JD) Peri. Node Incl. 2460760.50000 2460743.9202677 208.63017 121.71423 6.03561 e q a Epoch (TT) 0.2293999 3.2886285 4.26762 2025/03/26.00
m1 = 10.7 + 5 logΔ + 10.0 log r(t - 450)