Decay watch: 2000 Jun 29

From: Alan Pickup (alan@wingar.demon.co.uk)
Date: Thu Jun 29 2000 - 14:49:21 PDT

  • Next message: Alan Pickup: "Re: Decay watch: 2000 Jun 28"

    #20339 = 89- 94 B = Molniya 3-36 r
    
    Harro has already mentioned that SpaceCom has had great fun with this
    decayer, publishing a range of elsets showing it performing some
    startling manoeuvres ;)
    
    The latest elset for this is:
    Molniya 3-36 r                                   3482 x 76 km
    1 20339U 89094B   00181.77144322  .99999999  00000-0  17848-2 0   248
    2 20339  63.7489   5.3080 2087601 245.7799  91.1699 11.78480505 76590
    and the last four elsets, since noon UTC today, are at least consistent
    in that I can fit a SatEvo evolution through the implied equator
    crossing times with residuals of less than 4.5 seconds. That evolution
    leads to decay at Jun 30 22:56 UTC but, because of its recent behaviour,
    I'd put the uncertainty at +-12h. There are predicted elsets on my Decay
    Watch page at http://www.wingar.demon.co.uk/satevo/dkwatch/
            _____________________________________________________
    
    #21025 = 90-112 F = Raduga 26 aux motor
    
    No further decay prediction from SpaceCom, but my new estimate shows
    decay slipping to Jul  2 14:56 +-17h. The latest elset...
    
    Raduga 26 aux motor                              1184 x 108 km
    1 21025U 90112F   00181.61168265  .13211648 -23023-1  33189-3 0  5416
    2 21025  46.3610 209.6655 0765908  28.6145 335.5369 14.74756171131378
    
    ... has this running 23 seconds late against yesterday's SatEvo
    prediction. More on my Decay watch page.
    
    
    Alan
    -- 
     Alan Pickup | COSPAR 2707:  55d53m48.7s N  3d11m51.2s W   156m asl
     Edinburgh   | Tel: +44 (0)131 477 9144     Fax: +44 (0)870 0520750
     Scotland    | SatEvo page:   http://www.wingar.demon.co.uk/satevo/
    
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    This archive was generated by hypermail 2b29 : Thu Jun 29 2000 - 14:50:53 PDT