Re: 2010-030B (37731, name not yet known to me) is a nice variable satellite

From: Leo Barhorst (
Date: Fri Jul 08 2011 - 17:20:56 UTC

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    This is Shi-Jian 11-03 (SJ 11-03 launched on a CZ-2C launcher from Jiuquan 
    SLS Left.
    The B-object is the 2nd stage.
    Leo Barhorst
    -----Oorspronkelijk bericht----- 
    From: Bram Dorreman
    Sent: Thursday, July 07, 2011 1:08 PM
    To: Seesat List ;
    Subject: 2010-030B (37731,name not yet known to me) is a nice variable 
    I saw the new TLE on SpaceTrack and predicted it and its associated
    A-object, very likely the payload.
    Nice transits had been predicted for my location.
    Fortunately the clouds cooperated and were not present at those parts
    of the sky where the newly launched objects might be
    When I picked up the B-object I was thinking of a CZ-rocket, like
    2009-021B. It had a flash period easy to follow.
    When rising the amplitude decreased. After the culmination point the
    amplitude increased.
    Here is the PPAS-report.
    yy-nnncc yy-mm-dd hh:mm:ss.s ooo sss.s s.s nnn ff.fff comments
    11- 30 B 11-07-06 22:07:33.2 BD  243.6 0.1  28  8.70  A; +2.1->inv
    PPAS-records, for format see
    I could not find a name for the object and its payload. I assume it is a 
    Later I found out it was launched that very same day. It was just like
    2009-021B which I saw first on its launch date.
    I compared the two (assumed) payloads (09021A and 11030A) and the
    (assumed) rockets: their orbits are not complete similar.
    The recent satellites are about 200 km higher.
    After I saw the steady A-object, magnitude +5.1 at brightest, more
    clouds came in and I was not able to find any suitable
    tracking satellites from our classified object lists.
    Bram Dorreman
    Site 4160: 51.27931 N, 5.47683 E, 35 m (WGS84)
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