Here's yet another measurement on Superbird A (#20040):
Cospar Date time UT ob total acc #of flash
ID YY-MM-DD HH:MM:SS se time fls period remarks
-------- -------- -------- -- ------ --- --- ------ =
------------------------
89- 41 A 98-04-21 03:54 RM 406.75 .2 35 11.621 +-.006, flsh peak =
mag +2
(True period is 23.243 =
+-.011)
Observed from Belmont Shore, CA [33.7602 N, 118.1295 W, 5m].
--Rob