SBIRS 1 flashes = BY Classfd May 8

From: Kevin Fetter (
Date: Mon May 09 2011 - 00:05:30 UTC

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    --- On Sun, 5/8/11, Brad Young <> wrote:
    > After I got home, I saw Kevin's post and tried to see
    > flashes from the SBIRS GEO 1 bird, but only tried with 12x60
    > binoculars, and did not know the period or brightness (which
    > is?).
    At the time, I was observing it, the flashes were on the faint side, I would say magnitude 9 range.
    I would observe a flash every 10 minutes. The flashes weren't quick, but visible for a few seconds, due to the slow rotation of the sat.
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