Talk:SDP4
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"Any satellite with an orbital time of greater than 255 minutes should use this algorithm", that seems to be more opinion than fact Redconverse 19:00, 18 May 2006 (UTC)
The 255 minutes was wrong, it is 225 minutes and the choice is one made in the original design of the NORAD/AFSPC orbit determination system. For accuracy, you need to use the same model and assumptions in using the TLE as were made in generating them.--Pcrawford 11:14, 25 November 2006 (UTC)
