Bjoern Gimle said,
> OTOH, an accurate integration program (INT2? NPOE?) should compute
> positions.
> Vec2TLE converts {X Y Z Xdot Ydot Zdot} to TLE's
Since the XYZ is given every hour and the motion is slow, would simple
differencing
of successive coordinates be a reasonable way to get the dots? Also, could
you comment on whatever coordinate transformation might be needed
("geocentric solar ecliptic" -> ?) ?
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