Next KH reboost?

From: GlocalNet (bg_26934@glocalnet.net)
Date: Fri May 11 2007 - 04:25:38 EDT

  • Next message: GlocalNet: "Re: Next KH reboost?"

    USA 186 was reboosted on or about Jan.11, and around 
    day 07081 its mean motion was equal to USA 161's.
    So with this average drag, the next reboost could occur 
    another 70 days ahead, or day 07151 = May 31
    
    Using more recent drag averages, Vec2TLE estimates the
    following elsets for that day:
    USA 186
    1 28888U 05042A   07151.76918276  .00009005  00000-0  11161-3 0    16
    2 28888  97.8935 213.9169 0523714  75.5856 290.2871 14.78974525  3516
    USA 161
    1 26934U 01044A   07151.74223489  .00002888  00000-0  53603-4 0    17
    2 26934  98.0260 263.6512 0464467 261.0919  93.7457 14.78144843  3502
    
    On its daytime pass at 50N, U188 would be 2:42 ahead of U161,
    and have a ground track about 9.6 deg E of U161's.
    
    So, U188 should indeed be close to a reboost.
    Note also that U161 perigee is near the equator, but
    it will not reach MM=14.8 until the end of 2007, so
    I doubt it will change its MM, only inclination?
    
    
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