In case it is still orbiting, it could pay off to search for it. At 35S it could be seen low in the SE in the morning twilight, soon after perigee. If it still has a high perigee it would pass higher or earlier, and the chances of witnessing the decay improves. OIG had elsets and decay predictions for USA 153 Centaur, but nothing for USA 136 Centaur yet. On DOY 125.0 (?) Mike "was very lucky to find it after searching for only 45 minutes." and predicted drag .09 for 126.0 On DOY 128.0 (?) he "failed to find it sarching about 45 minutes early to about 30 minutes late." The most recent elset I found was USA 136 CentRk 1 25035U 97068B 04126.04620462 0.06500000 00000-0 10667-2 0 08 2 25035 63.5359 24.1290 6463648 247.7621 34.6012 3.51153652 09 Assuming >45 min early after two days, the error could have grown to 12h on my first clear night last Friday. Predictions are quite useless, but I selected a few higher ndot2 and used SatEvo to generate orbits with decay May 20-28. I had to remove/reduce the drag terms and used SGP to make SkyMap predict anything. They may give an idea on where to search. USA 136 r .11 2.8 1603 x 84 km 1 25035U 97068B 04139.09657634 .00000000 26044-1 29255-2 0 90007 2 25035 63.3627 13.2378 1052068 247.7090 100.8115 14.14696364 841 USA 136 r .105 2.7 1606 x 84 km 1 25035U 97068B 04139.71739935 .00000000 23460-1 27956-2 0 90005 2 25035 63.3628 12.7210 1053480 247.7066 100.7982 14.14350588 883 USA 136 r .098 3.6 1139 x 81 km 1 25035U 97068B 04140.81202213 .00000000 52815-2 27201-2 0 90000 2 25035 63.3354 11.5390 0756659 247.7051 104.1030 14.86128036 967 USA 136 r .095 1.6 2307 x 87 km 1 25035U 97068B 04140.91459499 .00000000 66509-2 24671-2 0 90009 2 25035 63.4104 12.1819 1465567 247.6983 96.1414 13.16894972 948 USA 136 r .065 9967 x 88 km 1 25035U 97068B 04141.01143721 .22675983 92692-2 11564-2 0 90007 2 25035 63.5107 16.2237 4330749 247.7072 61.5513 7.12774945 747 ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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