Bill and everyone - There seems to be some confusion about how far Priroda trailed Mir before today's docking. I believe I saw Priroda twice, and since I didn't have any elements for the module, I used lag times (following Mir) computed from the Priroda Rendezvous and Docking Timeline posted to Seesat by Stu@huston.mdc.com (thanks!). Using the following orbital periods, extracted from the Timeline: orbit priroda mir 0 89.837 92.4 17 90.9 32 91.9 47 92.0, I computed the following time differences between the passages of Mir and Priroda past an arbitrary point (the numbers in parantheses are observed timings): Orbit April UT Priroda - Mir (minutes) 1 23 10.8 69.5 2 23 12.4 66.9 3 23 13.9 64.4 4 23 15.5 61.8 5 23 17.0 59.2 6 23 18.5 56.7 7 23 20.1 54.1 8 23 21.6 51.6 9 23 23.2 49.0 10 24 0.7 46.4 11 24 2.2 43.9 12 24 3.8 41.3 13 24 5.3 38.7 14 24 6.9 36.2 15 24 8.4 33.6 16 24 9.9 31.1 17 24 11.5 29.6 18 24 13.0 28.1 19 24 14.6 26.6 20 24 16.1 25.1 21 24 17.6 23.6 22 24 19.2 22.1 23 24 20.7 20.6 24 24 22.3 19.1 25 24 23.8 17.6 26 25 1.3 16.1 27 25 2.9 14.6 28 25 4.4 13.1 (13, Keen) 29 25 6.0 11.6 30 25 7.5 10.1 31 25 9.0 8.6 32 25 10.6 8.1 33 25 12.1 7.6 34 25 13.7 7.1 35 25 15.2 6.6 36 25 16.7 6.1 37 25 18.3 5.6 38 25 19.8 5.1 (4.6, Tristan Cools) 39 25 21.4 4.6 40 25 22.9 4.1 41 26 0.4 3.6 42 26 2.0 3.1 43 26 3.5 2.6 (2.8, Keen) 44 26 5.1 2.1 45 26 6.6 1.6 46 26 8.1 1.1 47 26 9.7 0.7 48 26 11.2 0.3 49 26 12.8 -0.1 I know this is too late to help anybody see Priroda now, but maybe the methodology will help someone in the future. And, since it seemed to work (I wasn't sure it would), I'll try to post similar tables in the future. cheers, Rich