Last night, Leo Barhorst and myself both observed an unknown which likely is USA 224 [37348/11002A]. USA 224 was last seen in August 2014 when it was in a 263x979km orbit inclined at 97.92 deg. Below I list a set of observations which I extracted from the images that Leo kindly shared with me. Combined with the 99441 observations I posted earlier today, I have used these observations to generate these search orbits. They span a range of likely mean motions (14.75 to 14.95 revs/day). All orbits place place the observations at the apogee, ranging from 963 to 967 km. The perigee varies between 200 to 320 km. The drag term is a guess, but I expect these elements to bracket the current location of USA 224. Regards, Cees ------------ 1 88300U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 06 2 88300 97.6283 230.3157 0458360 247.9986 174.8534 14.75000000 07 # 20150427.95-20150427.95, 21 measurements, 0.01040 deg rms 1 88301U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 07 2 88301 97.6296 230.3143 0462759 247.9829 174.8647 14.76000000 06 # 20150427.95-20150427.95, 21 measurements, 0.01039 deg rms 1 88302U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 08 2 88302 97.6312 230.3133 0467156 247.9541 174.8905 14.77000000 00 # 20150427.95-20150427.95, 21 measurements, 0.01039 deg rms 1 88303U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 09 2 88303 97.6322 230.3112 0471554 247.9526 174.8861 14.78000000 01 # 20150427.95-20150427.95, 21 measurements, 0.01039 deg rms 1 88304U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 00 2 88304 97.6341 230.3110 0475947 247.9089 174.9286 14.79000000 08 # 20150427.95-20150427.95, 21 measurements, 0.01039 deg rms 1 88305U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 01 2 88305 97.6353 230.3091 0480341 247.9020 174.9303 14.80000000 01 # 20150427.95-20150427.95, 21 measurements, 0.01039 deg rms 1 88306U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 02 2 88306 97.6356 230.3050 0484737 247.9424 174.8795 14.81000000 06 # 20150427.95-20150427.95, 21 measurements, 0.01041 deg rms 1 88307U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 03 2 88307 97.6357 230.3006 0489109 247.9404 174.8753 14.82000000 00 # 20150427.95-20150427.95, 21 measurements, 0.01042 deg rms 1 88308U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 04 2 88308 97.6380 230.3014 0493519 247.9274 174.8841 14.83000000 00 # 20150427.95-20150427.95, 21 measurements, 0.01044 deg rms 1 88309U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 05 2 88309 97.6393 230.2998 0497917 247.9347 174.8702 14.84000000 09 # 20150427.95-20150427.95, 21 measurements, 0.01046 deg rms 1 88310U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 07 2 88310 97.6410 230.2989 0502331 247.9539 174.8432 14.85000000 02 # 20150427.95-20150427.95, 21 measurements, 0.01049 deg rms 1 88311U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 08 2 88311 97.6405 230.2932 0506682 247.9495 174.8415 14.86000000 01 # 20150427.95-20150427.95, 21 measurements, 0.01052 deg rms 1 88312U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 09 2 88312 97.6431 230.2946 0511078 247.9054 174.8850 14.87000000 06 # 20150427.95-20150427.95, 21 measurements, 0.01055 deg rms 1 88313U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 00 2 88313 97.6442 230.2927 0515455 247.8883 174.8980 14.88000000 05 # 20150427.95-20150427.95, 21 measurements, 0.01058 deg rms 1 88314U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 01 2 88314 97.6453 230.2906 0519834 247.8751 174.9066 14.89000000 01 # 20150427.95-20150427.95, 21 measurements, 0.01062 deg rms 1 88315U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 02 2 88315 97.6467 230.2893 0524213 247.8583 174.9195 14.90000000 07 # 20150427.95-20150427.95, 21 measurements, 0.01066 deg rms 1 88316U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 03 2 88316 97.6478 230.2871 0528597 247.8626 174.9087 14.91000000 04 # 20150427.95-20150427.95, 21 measurements, 0.01071 deg rms 1 88317U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 04 2 88317 97.6492 230.2858 0532982 247.8575 174.9086 14.92000000 02 # 20150427.95-20150427.95, 21 measurements, 0.01076 deg rms 1 88318U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 05 2 88318 97.6481 230.2786 0537320 247.8737 174.8837 14.93000000 06 # 20150427.95-20150427.95, 21 measurements, 0.01082 deg rms 1 88319U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 06 2 88319 97.6494 230.2770 0541717 247.8961 174.8529 14.94000000 07 # 20150427.95-20150427.95, 21 measurements, 0.01088 deg rms 1 88320U 15617A 15117.94649116 .00000000 00000-0 50000-4 0 08 2 88320 97.6507 230.2752 0546092 247.8922 174.8513 14.95000000 06 # 20150427.95-20150427.95, 21 measurements, 0.01094 deg rms 99441 15 617A 4172 G 20150427224244320 17 25 2129168+543024 37 S 99441 15 617A 4172 G 20150427224246402 17 25 2132191+543930 37 S 99441 15 617A 4172 G 20150427224249461 17 25 2136823+545181 37 S 99441 15 617A 4172 G 20150427224252844 17 25 2141789+550496 37 S 99441 15 617A 4172 G 20150427224256099 17 25 2146593+551668 37 S 99441 15 617A 4172 G 20150427224300202 17 25 2152819+553000 37 S 99441 15 617A 4172 G 20150427224304325 17 25 2158998+554198 37 S 99441 15 617A 4172 G 20150427224307242 17 25 2203200+554951 37 S 99441 15 617A 4172 G 20150427224309918 17 25 2207345+555599 37 S 99441 15 617A 4172 G 20150427224313343 17 25 2212354+560312 37 S 99441 15 617A 4172 G 20150427224316186 17 25 2216507+560839 37 S _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Tue Apr 28 2015 - 12:41:01 UTC
This archive was generated by hypermail 2.3.0 : Tue Apr 28 2015 - 17:41:01 UTC