Re: Re: TLE's from observations

Bjoern Gimle (
Wed, 4 Dec 1996 06:51:44 +0100 (MET)

My reply was also to Bruno Tilgners comments, but I forgot to add
my last remark :

>Using NORAD TLE's in a different model will result in degraded predictions
>even if the model is intrinsically more accurate. Conversely, it could be
>argued that using TLE's, constructed in the way outlined above, with a NORAD
>model such as SGP4 could lead to erroneous results.

If you use elcor/pelcor/firstelc to improve the initial elsets, it
uses SGP4 in its computations, so the elsets should be good for
'NORAD' (USSPACECOM) model predictions.

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