More flashes from #24871 (Iridium 20aka18)

Frank Reed (f-reed@metabien.com)
Mon, 15 Jun 1998 09:56:13 -0700

1998 Jun 15 05:03:24 UTC +- 2 seconds

Last of 7 flashes of NORAD24871 (Iridium 20aka18) sighted.  First flash
about mag. 0 followed by 5 flashes about mag. -1 followed by 1 flash about
mag. 0.  I clocked 5 periods in 4.69 seconds, computed average period =
0.938 seconds.  Others have recently reported double flashing episodes
separated by about 1 1/2 minutes.  I stopped looking after seeing the
flashes noted above so I may have missed a 2d episode.

Earlier sightings last evening 6/14/98 local, 1998 Jun 15 UTC:

UTC
04:07     #16791   COSMOS 1758 with 10x50
04:16     #21701   UARS with 10x50, also visible at 1x
04:23     #18187   COSMOS 1867 with 10x50, est. mag. 3, 2 mags brighter
than predicted
04:34     #15333   COSMOS 1603 with 10x50
04:53     #10967   SEASAT 1, easy at 1x, est. mag. 1, 2 mags brighter than
predicted

-- Frank Reed
Scottsdale, Arizona, USA  111.898W  33.484 N  1227 feet