Bion M1

From: Tristan Cools (
Date: Tue Apr 23 2013 - 21:30:01 UTC

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    This evening I probably saw the Bion M1 satellite(2013-15A/39131), with
    elements from Celestrack(last 30 launches) it was still 5 minutes early.
    It was visible with the naked eye, probably mag +1.5.  I already observed
    the rocket(2013-15G) Sunday evening, but I presume the other satellites
    related to this launch(15B->15F) are much fainter.
    Although no source (Spacetrack does not yet assignes the object with a
    name), it was bright and varying, so I believe 2013-15G is the third stage
    Soyuz rocket.
    Time: 20:49UTC, Bruges Belgium,
    Tristan Cools
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