Nico, Using your recent elset (shown below as 65606), I reduced my observations of June 3 and found that OTV-6 would have passed through the asterism with delta Ursa Majoris 50 seconds earlier than I reported. Not surprisingly, Mike's old elset (here as 45606) shows the same result, and his new one matches my observation. What is your assertion that the orbit of OTV-6 has not changed based on? Radio or visual observations? Only your own, or others? Have you reduced and reported those observations? I make mistakes, but generally not on the order of 50 seconds. If I have, it would be helpful to me to have data to compare to understand where things went wrong. Barring maneuvers, I won't have any good passes for a while, and would like to better prepared when things do improve. OTV 6 nico 1 65606U 20029A 20152.06547600 0.00000000 00000-0 00000-0 0 05 2 65606 44.9650 245.0202 0002003 103.8909 256.1086 15.59425537 05 OTV 6 mm1 1 55606U 20029A 20155.39697227 0.00000000 00000-0 00000-0 0 05 2 55606 44.9600 225.8792 0009003 69.1419 290.8576 15.58843137 05 OTV 6 mm2 1 45606U 20029A 20156.18447800 .00005000 00000-0 63712-4 0 01 2 45606 45.0090 221.4883 0000003 76.5930 31.9462 15.59424514 07 Results: 65606 20 029A 8336 F 20200603095128000 17 25 1218650+573198 38 S 65606 20 029A 8336 F 20200603095038000 17 25 1218650+573198 38 S 45606 20 029A 8336 F 20200603095128000 17 25 1218106+572700 38 S 45606 20 029A 8336 F 20200603095128000 17 25 1218650+573198 38 S 55606 20 029A 8336 F 20200603095128000 17 25 1218106+572700 38 S Deatils.txt files: 2020 Jun 03 09:51:28.0 UTC 20029A 65606 SGP4 Star A: 12:15:25.4529 +57:01:57.355 (2000.0) Mag 3.298 Star B: 12:20:50.8815 +57:51:50.832 (2000.0) Mag 5.693 Object on line AB, 0.600000 from A to B; Star Sep = 1.106 deg Object: 12:18:39.0041 +57:31:58.900 (2000.0) +/- 0.055 deg (0.050 X Star Sep) Obs - Pred: 0.016 deg X-track; 47.526 s late, relative 3.35 day old elset: 1 65606U 20029A 20152.06547600 0.00000000 00000-0 00000-0 0 05 2 65606 44.9650 245.0202 0002003 103.8909 256.1086 15.59425537 05 65606 20 029A 8336 F 20200603095128000 17 25 1218650+573198 38 S 2020 Jun 03 09:50:38.0 UTC 20029A 65606 SGP4 Star A: 12:15:25.4529 +57:01:57.355 (2000.0) Mag 3.298 Star B: 12:20:50.8815 +57:51:50.832 (2000.0) Mag 5.693 Object on line AB, 0.600000 from A to B; Star Sep = 1.106 deg Object: 12:18:39.0041 +57:31:58.900 (2000.0) +/- 0.055 deg (0.050 X Star Sep) Obs - Pred: 0.014 deg X-track; 0.193 s early, relative 3.34 day old elset: 1 65606U 20029A 20152.06547600 0.00000000 00000-0 00000-0 0 05 2 65606 44.9650 245.0202 0002003 103.8909 256.1086 15.59425537 05 65606 20 029A 8336 F 20200603095038000 17 25 1218650+573198 38 S 2020 Jun 03 09:51:28.0 UTC 20029A 45606 SGP4 Star A: 12:15:25.4529 +57:01:57.355 (2000.0) Mag 3.298 Star B: 12:20:50.8815 +57:51:50.832 (2000.0) Mag 5.693 Object on line AB, 0.500000 from A to B; Star Sep = 1.106 deg Object: 12:18:06.3778 +57:26:59.932 (2000.0) +/- 0.055 deg (0.050 X Star Sep) Obs - Pred: 0.085 deg X-track; 44.496 s late, relative -0.77 day old elset: 1 45606U 20029A 20156.18447800 .00005000 00000-0 63712-4 0 01 2 45606 45.0090 221.4883 0000003 76.5930 31.9462 15.59424514 07 45606 20 029A 8336 F 20200603095128000 17 25 1218106+572700 38 S 2020 Jun 03 09:51:28.0 UTC 20029A 45606 SGP4 Star A: 12:15:25.4529 +57:01:57.355 (2000.0) Mag 3.298 Star B: 12:20:50.8815 +57:51:50.832 (2000.0) Mag 5.693 Object on line AB, 0.600000 from A to B; Star Sep = 1.106 deg Object: 12:18:39.0041 +57:31:58.900 (2000.0) +/- 0.055 deg (0.050 X Star Sep) Obs - Pred: 0.022 deg X-track; 44.421 s late, relative -0.77 day old elset: 1 45606U 20029A 20156.18447800 .00005000 00000-0 63712-4 0 01 2 45606 45.0090 221.4883 0000003 76.5930 31.9462 15.59424514 07 45606 20 029A 8336 F 20200603095128000 17 25 1218650+573198 38 S 2020 Jun 03 09:51:28.0 UTC 20029A 55606 SGP4 Star A: 12:15:25.4529 +57:01:57.355 (2000.0) Mag 3.298 Star B: 12:20:50.8815 +57:51:50.832 (2000.0) Mag 5.693 Object on line AB, 0.500000 from A to B; Star Sep = 1.106 deg Object: 12:18:06.3778 +57:26:59.932 (2000.0) +/- 0.055 deg (0.050 X Star Sep) Obs - Pred: 0.041 deg X-track; 0.098 s late, relative 0.01 day old elset: 1 55606U 20029A 20155.39697227 0.00000000 00000-0 00000-0 0 05 2 55606 44.9600 225.8792 0009003 69.1419 290.8576 15.58843137 05 55606 20 029A 8336 F 20200603095128000 17 25 1218106+572700 38 S Brad Young PE Visual: Oberwerk 8 x 40 Mariner binoculars Meade ETX-125 22" f/4.2 UC Obsession COSPAR 8336 =TULSA1 +36.139208,-95.983429 660ft, 201m COSPAR 8335 =TULSA2 +35.8311 -96.1411 1083ft, 330m Remote Imaging: MPC I89 COSPAR 7777 38.165653 -2.326735 5150ft, 1650m Nerpio, Spain MPC Q62 COSPAR 7778 -31.2733 149.0644 3400ft, 1122m Siding Spring, NSW, Australia MPC H06 COSPAR 7779 32.92 -105.528 7298ft, 2225m Mayhill, New Mexico USA MPC 323 COSPAR 7782 -32.008 116.135 984ft, 300m Perth, WA, Australia On Thursday, June 4, 2020, 7:15:53 AM CDT, Nico Janssen via Seesat-l <seesat-l_at_satobs.org> wrote: OTV 6 has not performed any maneuvers (yet). It is still in its original orbit: OTV 6 1 45606U 20029A 20156.18447800 .00005000 00000-0 63712-4 0 01 2 45606 45.0090 221.4883 0000003 76.5930 31.9462 15.59424514 07 NJ _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-l _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu Jun 04 2020 - 13:29:18 UTC
This archive was generated by hypermail 2.3.0 : Thu Jun 04 2020 - 18:29:18 UTC