Observed Superbird A (89 41A, 20040). First flash seen at 03:10:07.9 Sept 20 1997 UT, but may have missed some of the first flashes 25 flashes observed Mean 11.627 sec half-period (23.25 sec full period) Standard Error 0.021 sec Standard Dev'n 0.106 sec Flashes very regular, no 11.3/12.0 "unbalanced pairs" seen __________________________________________________ Jim Varney 121.398W 38.458N 8m Sacramento, CA jamesv@softcom.net, sat_watcher@rocketmail.com _____________________________________________________________________ Sent by RocketMail. Get your free e-mail at http://www.rocketmail.com