USA 129 manoeuvred near perigee to raise its apogee, on 2005 May 05, at 15:04:46 UTC. Thank you Andy K. for the alert that it was running late. I managed to obtain six points, included below. 28646 05 016A 2701 G 20050506012923370 17 25 0325061+713790 97 S 28646 05 016A 2701 G 20050506012943950 17 25 0203637+754670 28 S 28646 05 016A 2701 G 20050506013117300 17 25 2029623+653685 28 S 28646 05 016A 2701 G 20050506013125370 17 25 2021100+635972 37 S 24680 96 072A 2701 G 20050506025524020 17 25 1051606-023649 86 S 24680 96 072A 2701 G 20050506025535100 17 25 1044238+005708 28 S 24680 96 072A 2701 G 20050506025700980 17 25 0921970+325448 18 S 24680 96 072A 2701 G 20050506025715200 17 25 0903009+374833 28 S 24680 96 072A 2701 G 20050506025848370 17 25 0626430+561711 37 S 24680 96 072A 2701 G 20050506030040620 17 25 0401398+560125 27 S 28646 05 016A 2701 P 20050506045613200 17 25 0338720+653593 18 S 28646 05 016A 2701 P 20050506045640120 17 25 0234495+673870 38 S 28646 05 016A 2701 P 20050506045719950 17 25 0045355+664753 28 S 28646 05 016A 2701 P 20050506045809890 17 25 2301586+594011 28 S 28646 05 016A 2701 F 20050506064059480 17 25 1719824+694465 57 S 28646 05 016A 2701 F 20050506064113640 17 25 1803482+634415 28 S 28646 05 016A 2701 F 20050506064323750 17 25 1949693+114491 97 S IOD format: http://www.satobs.org/position/IODformat.html Site 2701: 43.68764 N, 79.39243 W, 230 m I fit the following orbit to my six points, plus a fake one looking straight up from the sub-satellite point at the time of the manoeuvre. Residuals are 0.02 deg. I will revise the elements in the event other post-manoeuvre observations are reported. USA 129 15.0 3.0 0.0 5.3 v 1 24680U 96072A 05126.11472861 .00009330 00000-0 12627-3 0 07 2 24680 97.9716 189.9725 0526594 295.3194 59.4359 14.72949121 01 I have reviewed the circumstances all of the USA 129 (96072A / 24680) reboosts during the life of USA 161 (01044A / 26943) for which I have orbital elements. USA 129 reboosts occur when USA 161's lag behind it exceeds approximately 2h40m. The results are summarized below: 01044A lag 96072A boost UTC Lat h:mm:ss --------------------------- ---------- 2002 Apr 04 16:27 00.17 S +2:41:41 2002 Jun 27 15:09 81.45 N +2:40:31 2002 Sep 12 16:35 14.52 S +2:45:44 2003 Jan 17 14:03 39.72 N +2:39:00 2003 Mar 27 15:46 81.39 S +2:46:00 2003 Jun 05 18:44 42.13 N +2:40:39 2003 Aug 07 13:58 16.61 S +2:37:09 2003 Oct 16 14:33 31.89 S +2:48:44 2003 Dec 18 12:54 57.99 N +2:42:16 2004 Feb 12 17:34 60.42 N +2:44:06 2004 Mar 18 17:43 06.00 S +2:42:31 2004 Mar 23 14:16 09.74 N +2:42:16 2004 Jun 17 13:55 72.28 S +2:46:57 2004 Aug 26 15:21 29.90 N +2:40:19 2004 Nov 18 14:43 61.63 N +2:24:36 2005 Feb 03 16:49 49.42 S +2:36:38 2005 May 05 15:05 62.09 S +2:27:33 The reboost times ranged between 12:54 and 18:44 UTC, about a 6 hour span, that seems to fit nicely into someone's 8 h workday. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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