These two objects are making evening passes in the northern hemisphere. The rocket has a tumble period of about 7 seconds. NOSS 2-3 Rk 1 23907U 96029 B 97187.93731658 0.00009100 00000-0 11018-3 0 08 2 23907 63.4334 233.9376 0158000 153.4123 206.5877 15.46560232 01 This TiPS elset has an epoch 24 days in the past. TiPS 1 23937U 96029 F 97166.42725617 0.00000340 00000-0 42485-3 0 09 2 23937 63.4254 297.7924 0032001 345.7947 14.2053 13.63975533 05 Due to its increasing eccentricity, the drag is slightly higher now. The Navy elset: 1 00006U 00000 A 97188.59722222 -.00000321 00000 0 -4003-2 0 0000 2 00006 63.4287 239.0384 0035548 358.5587 143.3252 13.63986668 5064 gives a prediction that is 4 seconds later than my elset. (The Navy doesn't know how to compute checksums and that negative "drag" term is really crazy.) Valid format and checksums: 1 00006U 00000 A 97188.59722222 -.00000321 00000-0 -40071-3 0 05 2 00006 63.4287 239.0384 0035548 358.5587 143.3252 13.63986668 09 Mike McCants