Re: Iridium 20

Ed Cannon (ecannon@mail.utexas.edu)
Thu, 19 Nov 1998 22:51:28 -0600

Robert G Fenske Jr (fenske@rgfpc.electro.swri.edu) wrote, on Mon, 
16 Nov 1998, at about 08:19:57 -0600 (CST):
 
>      Iridium 20 (24871) presented me with some good flashes last night
> (Nov 15 ~01:31 UTC).  Just after culmination there were several quick
> negative magnitude flashes (.2? - .5 second apart).  Then nothing for
> about 10 seconds, then another set of quick flashes about +1/+2 mag.

I was lucky enough to see Iridium 20 (24871, 97-34C) do some very nice 
flashes Thursday evening before the sky went completely overcast.  I was
clockless, so all I can report is about 12 flashes, perhaps 4 to 6 about
as bright as nearby Jupiter, before culmination when it was at *about* 
60 deg. altitude and 95 to 100 deg. azimuth.  Culmination was 65 alt. at 
92 azi. at 00:56:40 on 20 Nov. UTC.  Of this group, each of either of
the
pair of flashes that could be numbered 5 and 6 or 6 and 7 was a double 
flash.  That is, flash 6 was actually two flashes separated by a split-
second, and so was either 5 or 7.  Then some seconds later, when it was
perhaps at about 55-60 alt. and 75-80 azi., there was another group of 
15 to 20 flashes, some of them less than a second apart.  These were not
as bright as the first group.  The location was 30.286 N, 97.739 W, 150
m.

Ed Cannon - ecannon@mail.utexas.edu - Austin, Texas, USA