My old calc used a wrong angular formula. I also made a mistake in using the Earth's diametre instead of the panel height
Imma just plug the old values into the new formula.
Distance from point of view to object = object size * panel height in pixels/[object height in pixels*2*tan(70deg/2)]
1541936.19*281/(110*2*tan(70deg/2)) = 2 812 699.000237200233866 m
Assuming 10 seconds
2812699.000237200233866/10 = 281 269.9000237200233866 m/s, Mach 826.56, Massively Hypersonic
downgrade