Apology: Re: Which is correct?

From: Björn Gimle (bg_26934@glocalnet.net)
Date: Fri Mar 24 2006 - 10:24:30 EST

  • Next message: Greg Roberts: "Obs 23 March 2006-all"

    My apologies for misunderstanding Gerhard's wording - I was only
    thinking that an elset ought to match the (latest) observations upon it
    was computed.
    
    Of course it is interesting to know if an elset based only on previous
    observations matches the recent ones.
    But that partly relies on making a good guess on (average) future drag,
    partly on matching models for analysis and prediction.
    
    Greg provided 9 points on 20060312 and Mike made this elset:
    Unknown 041206
    1 90027U 04841A   06071.55035598 0.00001113  00000-0  11045+1 0    09
    2 90027  62.3773 158.6750 6940454 268.4454  91.5512  2.00728666    05
    
    I find the previous elset 100 days old, but no comment by Greg on how he
    found the satellite, or how accurate the predictions were.
    Unknown 041206
    1 90027U 04841A   05336.85736586 0.00001085  00000-0  12163+1 0    00
    2 90027  62.3435 170.1885 6919662 267.9704  92.0296  2.00612857    06
    
    This kind of check could be useful, at least after a shorter time.
    
    /Björn
    > ....
    >> What interests me is this: Has anybody actually observed
    >> *Unknown 041206* and found out which prediction is correct?
    >
    > The elsets are there because someone (Mike?) has computed
    > them based on observations by someone (Greg?)
    >
    > So the question comes down to "What model and possible
    > corrections/improvements is Mike's prorgam (FitElem?) using?"
    >
    
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