As I posted earlier, USA 186 was in the following orbit earlier today, UTC: USA 186 15.0 4.0 0.0 5.3 v 1 28888U 05042A 07159.07500452 .00010627 00000-0 10254-3 0 04 2 28888 97.8854 221.1000 0526580 51.7100 313.0272 14.79160280 09 Arc 2007 May 30.09 - Jun 08.08, WRMS residuals = 0.020 deg Based upon historical behaviour, it is about due to make a small re-boost manoeuvre to remain within the required separation from USA 161 (01044A / 26934). Here are search elements bracketing the probable earliest and latest manoeuvre times: at perigee passages between approximately 11 h UTC and 20 h UTC: 11:45:09 UTC re-boost 1 70001U 07159.48968750 .00010500 00000-0 10254-3 0 01 2 70001 97.8854 221.5089 0536000 50.3591 1.2000 14.76920000 07 19:51:54 UTC re-boost 1 70002U 07159.82770833 .00010500 00000-0 10254-3 0 03 2 70002 97.8854 221.8421 0536000 49.2580 1.1800 14.76920000 03 If the object does not appear as predicted by the pre-manoeuvre elements, then the 70002 elset defines the probable earliest pass, and 70001 the latest. The difference is small, but worth taking into account when planning obs. Ted Molczan ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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