Question about USA 89 r

From: Michael Sabino via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 18 Sep 2016 17:52:30 -0500
Hi,

Could you tell me what USA 89 does, or did, based on observation?

I am curious about it.

Thanks,

Michael Sabino
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Received on Sun Sep 18 2016 - 17:53:25 UTC

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