Superbird A flashes
Thu, 11 Mar 1999 09:47:50 +0000

On 1999 March 11 I observed Superbird A flashes in 20x80 binoculars 
for about 10 minutes in a reasonably clear sky (limiting magnitude 
about +8.5).

I timed a number of the flashes, the first at 03:25:44.75 UT, and the 
last at 03:34:48.07 UT.  This gives a period of 11s.560 +/- 0.005.  
There appeared to be a relatively rapid rise to a max mag of about
+4 at 03:27, followed by a slow fall - the last flash timed was about 
mag +7.  However the satellite only emerged from shadow at 03:22 UT.

David Brierley
Malvern, Worcestershire, UK
Station 2675, 52.1358N, 2.3264W, 70m