Here is Pierre's latest update, using 6 points from 9-11 Jan: USA 129 r 9.8 3.0 0.0 3.0 v 1 24681U 96072 B 97 11.85243630 .01446399 00000-0 19245-3 0 07 2 24681 97.7685 78.8750 0442942 89.9648 275.1092 15.40455303 05 Greg, your 11 Jan point seems to be about 10 s too early. Could there be a typo or other error? Ted Molczan