Here are Lyytinen et al predictions for year 2001 7, 9, 4, 10 and 11 rev trail
encounters. More information about predictions from WGN (Journal of the IMO) August 2001.
trail time(UT) ZHR half width
7r 18.11.2001 at 10:28 2000 55 minutes
9r 18.11.2001 at 18:03 2200-2600 1 hour
4r 18.11.2001 at 18:20 5000 40 minutes
10r & 11r 18.11.2001 at 19:10 200-300 2 hours