I just wonder whether they can say that, on date&time X1 (98% sure to be accurate within E1 hours) we know satellite Z will be X2 thousands of km away (98% sure

I just wonder whether they can say that, on date&time X1 (98% sure to be accurate within E1 hours) we know satellite Z will be X2 thousands of km away (98% sure to be accurate within E2 km).