Epoch 1997 Apr. 22.0 TT = JDT 2450560.5 T 1997 Apr. 6.79346 TT MPC q 4.2142911 (2000.0) P Q n 0.05077854 Peri. 213.49727 -0.51925602 -0.85178570 a 7.2224171 Node 267.87474 +0.79857988 -0.45462360 e 0.4164985 Incl. 3.98970 +0.30437371 -0.26034305 P 19.4 From 84 observations 1997 Apr. 9-2014 Oct. 25, mean residual 0".6.
m1 = 9.7 + 5 logΔ + 10.0 log r