CB Obs June 7, 2013; ISS and Persona launch

From: C. Bassa (cgbsat@gmail.com)
Date: Fri Jun 07 2013 - 22:37:47 UTC

  • Next message: Marco Langbroek: "Same two objects seen (Re: CB Obs June 7, 2013; ISS and Persona launch)"

    The ISS made a favourable pass at 21:47UT and I observed it together
    with my wife. While watching the ISS we noticed two other bright
    satellites close to the ISS. They were moving in parallel paths
    towards the zenith and were about half a minute apart. It struck me
    that they were moving fast and hence had to be in low orbits.
    
    Dumb luck would have it that I had my camera set up to catch the ISS
    pass, and both satellites passed through the field of view within
    seconds of the ISS!
    
    Upon analysis of the data I found that neither of them were cataloged,
    so I measured these positions:
    
    99062 13 658A   4553 G 20130607214656995 17 25 1656526+063309 37 S
    99062 13 658A   4553 G 20130607214658096 17 25 1657605+072989 37 S
    99062 13 658A   4553 G 20130607214659468 17 25 1658779+084360 37 S
    99062 13 658A   4553 G 20130607214700727 17 25 1659902+095401 37 S
    99063 13 658B   4553 G 20130607214721736 17 25 1653410+063792 37 S
    99063 13 658B   4553 G 20130607214723256 17 25 1654599+075789 37 S
    99063 13 658B   4553 G 20130607214724555 17 25 1655661+090938 37 S
    99063 13 658B   4553 G 20130607214726047 17 25 1656956+103491 37 S
    99063 13 658B   4553 G 20130607214726896 17 25 1657724+112523 37 S
    99063 13 658B   4553 G 20130607214727455 17 25 1658415+115862 37 S
    
    >From these measurements I estimate the following circular orbits:
    1 99062U          13158.90762571  .00000000  00000-0  50000-4 0    02
    2 99062  97.8642 233.6263 0000000   0.0000  52.0928 16.22600061    08
    
    1 99063U          13158.90792356  .00000000  00000-0  50000-4 0    06
    2 99063  97.9981 233.8102 0000000   0.0000  52.1853 16.22597320    00
    
    Since the orbits are so similar, but only at 200 km altitude they
    could only have just been launched. The SpaceflightNow launch schedule
    mentioned that a Soyuz was to launch a reconnaissance satellite for
    the Russian military from Pletesk today, and
    http://www.spaceflight101.com/soyuz-2-1b-persona-2-launch.html lists
    the launch time as 18:37UT.
    
    These orbits are a perfect match to that launch:
    http://db.tt/ruYoNqL8
    
    I hardly ever observe satellites with the naked eye, so feel very glad
    I was able to see this spectacle. More dumb look would have it that I
    recorded the individual frames, so I will create a video and upload it
    later.
    
    ----------------------------------------------------------------
    Setup: Watec 902H2 video, 50mm F/1.8, NTP, Nexstar SLT mount
    IOD format: http://www.satobs.org/position/IODformat.html
    COSPAR 4553: 53.3199N, 2.2438W, 86m (WGS84)
    ------------------------------------------------------------------
    
    Regards,
       Cees
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