On 2007.05.27 18:51:21 CEST, Matthew Gates wrote:
> I recall you expressing some frustration over the lack of detailed
> information regarding the two-line element orbital data which is published
> by NASA. I found this document which describes for format in detail. I
> thought you might be interested:
Thanks, Matthew, this is indeed a valuable piece of information.
I must point out that I do not understand the nature of the formulas
from just having a glance at them. On the other hand I am quite sure
that also without this understanding, it is possible to implement
artificial satellile ephemeris calculation based on NORAD data
from information in this document.
There are even Fortran example subroutines.