Hi Thomas,
I used the same TLE as you this time, so we have a means of comparing
numbers. Your lines are getting split up by the ~75-character line
limit, so I've just extracted the times, lats and longs for comparison.
My predictions are for sea-level, so I've used your sea-level values
as well. (Observer altitude in this case, and indeed most cases,
makes very little difference). All dates are 2003/4/11, times UTC:
Rob - Tom
UTC Time Rob Lat Rob Long Tom Lat Tom Long dLat dLong
-------- ------- -------- ------- -------- ---- -----
1:31:25 41.9302 -86.5943 41.9024 -86.6092 .0278 .0149
1:31:30 41.7282 -86.2397 41.7010 -86.2550 .0272 .0153
1:31:35 41.5251 -85.8873 41.4984 -85.9031 .0267 .0158
So my track is roughly 3.02 km north and 1.27 km east of Tom's, a
two-mile discrepancy that is roughly perpendicular to the transit
track. Unfortunately, this discrepancy is enough to turn a "hit" into
a miss. I'm confident ISS will transit the upper quarter of the Moon
as seen from the coordinates Thomas provided -- I guess we'll know
for sure in a couple hours... --Rob
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