WGS 6 search elements; fuel dump events

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Wed Aug 07 2013 - 17:32:20 UTC

  • Next message: Jon Mikel: "Re: WGS 6 search elements; fuel dump events"

    WGS 6 is scheduled for launch from Cape Canaveral on a Delta 4 Medium+(5,4) in about 7 hours, on 2013 Aug 08, between
    00:29 and 01:18 UTC.
    
    http://www.spaceflightnow.com/delta/d363/status.html
    
    I offer the following rough TLE of the orbit after the final burn of the 2nd stage, assuming launch at window-open: 
    
    SECO-2                                                 441 X 66941 km
    1 78902U          13220.04208334  .00000000  00000-0  00000-0 0    01
    2 78902  24.0048 143.0393 8298200 177.8402   1.4113  1.08259000    02
    
    Following spacecraft separation, observers within range should look for the following 2nd stage events (times
    approximate):
    
        T+       UTC
    00:45:00  01:14:00  CCAM Start (Collision and Contamination Avoidance Manoeuvre)
    00:47:20  01:16:20  CCAM End
    00:54:41  01:23:41  H2 Depletion End
    00:56:40  01:25:40  O2 Depletion End
    01:18:33  01:47:33  N2H4 depletion End
    
    The fuel dump could produce a spectacular comet-like phenomenon, similar to that of WGS 4, imaged last year despite
    challenging conditions, by Willie Koorts:
    
    http://satobs.org/seesat/Jan-2012/0270.html
    
    Ted Molczan
    
    
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