Epoch 1997 Sept. 29.0 TT = JDT 2450720.5 T 1997 Sept. 14.8599 TT MPC q 3.293043 (2000.0) P Q n 0.0900133 Peri. 132.8109 +0.9777897 -0.1208669 a 4.930961 Node 234.8430 +0.0696787 +0.9579599 e 0.332170 Incl. 12.0890 +0.1976669 +0.2602001 P 10.9 From 266 observations 1997-2008, mean residual 0".5.
m1 = -27.8 + 5 logΔ + 80 log r(t - 100)