Last evening I imaged a UNID. Using Mike's 73 day old elements fir 28888 I had the camera on the predicted spot from about 11 min before to 4 min after the predicted time. But nothing was seen that looked like 28888. Then the camera moved to a spot nearby and in the 3rd frame the UNID appeared. So I was quite lucky to capture it. 99999 17 549A 4172 G 20170218191806258 17 25 2208981+655241 37 S 99999 17 549A 4172 G 20170218191810954 17 25 2149012+650757 37 S 99999 17 549A 4172 G 20170218191813813 17 25 2138184+643724 37 S Using Satfit to ID it gave 1 strong and a few other candidates. The strong candidate was 28888 USA 186. 32750 -19.173 2.838 0.176 17549A 87.076 29658 -33.983 1.468 0.178 17549A 138.028 28888 -26.154 -0.691 0.073 17549A 73.044 23605 -215.436 -0.123 0.375 17549A 4.011 The residuals wrt classfd.tle Feb 14 give: 28888 17 549A | -10.86607 deg -869.724 sec 73.0 day, 3406.5 km 32750 17 549A | -4.10984 deg -642.695 sec 87.1 day, 2825.3 km 29658 17 549A | -6.25274 deg -1062.159 sec 138.0 day, 4456.5 km 23605 17 549A | -156.28080 deg -880.238 sec 4.0 day, 12485.6 km I asked Mike to have a look at it. He confirmed it could be 28888. >> This object seems to match the inclnation and node expected for USA 186 quite well. Here is a circular orbit: 1 99991U 17049.79405826 0.00000000 00000-0 00000-0 0 02 2 99991 96.8084 90.0920 0004459 19.0198 340.9802 15.44346673 03 But it's likely that the correct orbit is not circular. Here is my guess: USA 186 1 28888U 05042A 17049.79387321 0.00010000 00000-0 11624-3 0 07 2 28888 96.9403 90.3384 0121167 158.0603 201.9397 15.53079055 06 >> Hopefully the weather will clear in the next few days to verify Mike's TLE. Regards Leo _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Sun Feb 19 2017 - 09:25:38 UTC
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