Re: Important Delta/Globalstar info

From: Patrice Gambaro (gambaro@citenet.net)
Date: Mon Jan 31 2000 - 12:07:07 PST

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    Hi Dan
    
    I am intrigued by your message since I am very close to the coordinates you
    mentionned (45.8379N, 73.9162W). So I looked up the Boeing site to get
    information about that launch; not being very familiar with their terminology and
    the way they organize data, I'd like you to tell me if I understand this
    correctly:
    
    The launch is scheduled for 06 Feb, 16:26:00 / 16:56:00 EST wich is almost full
    daylight at this time of year. However, in the "Globalstar 7 Sequence of Events",
    it says :
    
    Restart second stage — depletion burn  01:51:53  (6713.0 sec. after launch)
    Fourth cutoff – second stage (SECO 4) 01:52:18  (6737.5 sec. after launch)
    
    wich brings us around 19:00 EST and well into full darkness. Also, according to
    their "Globalstar Orbit Trace" map, these events effectively take place almost
    directly above our heads. Are these two events the ones your are talking about ?
    What can we expect to see during those 24.5 secondes ? Do we need binocs ?
    
    Thamks
    
    Pat Gambaro
    
    Daniel Deak wrote:
    
    > Hi all,
    >
    > This week I asked Boeing, the maker of the Delta 2 rocket that will
    > launch the 4 Globalstar satellites on Feb. 6, a few question about the
    > fourth burn of the second stage. Here is what they could tell me :
    >
    > The fourth burn, ending at SECO 4, is NOT followed by a fuel dump.
    > It is only a burn. So, what we see is really the result of burning fuel.
    >
    > The coordinates for the start of the burn : Lat : 46.471 N, long : 75.363 W
    > The coordinates for the end of the burn : Lat : 47.004 N, long : 73.588 W
    >
    > This means I will be only at 150 km from the end point of the burn, if I stay
    > home !
    >
    > Dan
    >
    > --
    > Daniel Deak
    > Drummondville, Québec
    >
    > COSPAR site 1746 : 45.8537°N, 72.4857°W, 90 m., UTC-5:00
    >
    > E-mail : dan.deak@obsat.com        ICQ : 52770063
    > Site en francais sur les satellites:
    > French-language satellite web site : http://www.obsat.com
    >
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