RE: UNID flare this evening ........ Hi Mag image available

From: Bob Christy (
Date: Tue May 25 2004 - 03:07:05 EDT

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    O1 is the optical imaging satellite (IGS-1A)
    R1 is the radar-equipped version (IGS-1B)
    With all its appendages, your image would seem to be confirmed as IGS-R1/1B.
    Bob Christy
    -----Original Message-----
    From: John Locker []
    Sent: Tuesday, May 25, 2004 6:32 AM
    Subject: Re: UNID flare this evening ........ Hi Mag image available
    Hi all,
    Dan has provided the excellent link (below) to a page describing the IGS
    Can anyone tell me , which is which ?
    They are listed as IGS - 01 and IGS - R1
    R1  looks more like the image I captured so that would be 1B..........
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