T 1998 Apr. 2.40 TT Marsden q 0.0049 (2000.0) P Q Peri. 76.29 +0.19310 -0.98066 Node 356.84 -0.96141 -0.18262 e 1.0 Incl. 144.64 +0.19598 +0.07037 >From 6 observations 1998 Apr. 2.
m1 = 20.5 + 5 logΔ + 10 log r