Update on previous post
(Values with Scott Campbell's Satfit, X-track and Pos. error in degrees and delta T in seconds)
I dropped the last point because of its obvious anomalous character. This point is not the real end of the trail at the end of the exposure: but the point where the quickly fading satellite dropped in brightness below the imaging sensitivity treshold of the camera, some 1.5 seconds before the end of the exposure.
This underlines the quick fading at that moment: from +1.5 to below the imaging treshold in a mere 10.2 seconds.