Ed Cannon wrote: >Oct. 23 UTC; 30.286 N, 97.739 W, 150 m >... >94-35B (23133, UHF F3 Rk, Centaur), period about 24-27 seconds;=20 >UTC times, plus or minus a couple of seconds (uncertainty due >partly to timing method, partly to nature of maxima): > > 00:54:25, 00:54:49, 00:55:14?, 00:55:47,=20 > 00:56:11, 00:56:34, 00:57:01, 00:57:25 > Using my simple Synodic.rlz program, it is obvious that a period around 24 seconds is possible, if Ed did observe a 'phase shift', i.e. another surface caused the maxima from 00:55:47 on. A period of 8.2 seconds looks more probable, since all points are within +/- 0.4 seconds from the computed average flash peaks, except 00:56:34, which is 2.0 seconds early. (.gif screenshots of graphs+tables sent to Ed)