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