Observations 23 APRIL 2014 ------------------------------------ Cosatrak 1 (Computerised satellite Tracking System). FLI ML8300M CCD camera with mechanical shutter + Trimble GPS Used with NIKON ED AF NIKKOR 80-200mm f/2.8 telephoto lens set at 85mm focal length. Field of view 12 X 9 degrees, Images processed and measured manually. Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg, Elevation 10 metres-situated in Pinelands (Cape Town),South Africa FOR CLASSFD.TLE: -------------------------- 25336 98 029A 0433 G 20140423194751074 16 15 0745006+135211 28 +096 01 25336 98 029A 0433 G 20140423194811074 16 15 0745203+135141 28 +095 05 25669 99 017A 0433 G 20140423183658896 16 15 1042349+085011 28 25669 99 017A 0433 G 20140423183721722 16 15 1042464+085426 39 +127 12 25669 99 017A 0433 G 20140423183804558 16 15 1043161+085738 38 +102 01 25669 99 017A 0433 G 20140423183847424 16 15 1043443+090152 68 +120 08 25669 99 017A 0433 G 20140423183950266 16 15 1044111+090355 28 25669 99 017A 0433 G 20140423184241619 16 15 1045461+092003 28 25669 99 017A 0433 G 20140423184347321 16 15 1046251+092623 28 +126 01 25669 99 017A 0433 G 20140423184430157 16 15 1046520+092915 38 +112 01 27168 02 001A 0433 G 20140423184430157 16 15 1057400+112716 38 33490 09 001A 0433 G 20140423195542682 16 15 1312365+060049 28 +087 01 33490 09 001A 0433 G 20140423195827212 16 15 1315174+055754 18 +080 02 35815 09 047A 0433 G 20140423195542682 16 15 1327511+052608 28 +109 01 35815 09 047A 0433 G 20140423195827212 16 15 1330361+052608 57 +109 02 38528 12 034A 0433 G 20140423195542682 16 15 1348159+024725 28 +080 01 STRAYS SEEN: ---------------------- 19215 88 051A 0433 G 20140423195542682 16 15 1322326+062557 19 +131 10 19215 88 051A 0433 G 20140423195827212 16 15 1325052+061421 19 +121 05 23649 95 043A 0433 G 20140423194751074 16 15 0751056+132955 28 +110 01 24435 96 058A 0433 G 20140423195542682 16 15 1335106+092123 28 +101 01 24435 96 058A 0433 G 20140423195827212 16 15 1337522+091107 47 +122 01 24665 96 067A 0433 G 20140423195542682 16 15 1331521+084611 28 +097 02 24665 96 967A 0433 G 20140423195827212 16 15 1334373+084342 77 +097 01 24916 97 046A 0433 G 20140423195542682 16 15 1339348+063419 28 +112 01 24916 97 046A 0433 G 20140423195827212 16 15 1342193+063346 47 +109 01 25071 97 076A 0433 G 20140423184430157 16 15 1104087+053402 38 +122 01 25462 98 050A 0433 G 20140423184430157 16 15 1049171+053351 38 +123 02 25673 99 018A 0433 G 20140423195542682 16 15 1330350+063132 28 +107 01 25673 99 018A 0433 G 20140423195827212 16 15 1333197+063102 47 26494 00 054A 0433 G 20140423184430157 16 15 1103258+053516 38 +124 01 26590 00 068A 0433 G 20140423195542682 16 15 1316383+052618 28 +098 01 26590 00 068A 0433 G 20140423195827212 16 15 1319221+052616 67 +096 02 26666 01 002A 0433 G 20140423195827212 16 15 1305435+052807 18 +109 02 26719 01 011A 0433 G 20140423184430157 16 15 1050302+053200 38 +122 02 26766 01 019A 0433 G 20140423195542682 16 15 1328168+052538 28 +100 01 26766 01 019A 0433 G 20140423195827212 16 15 1331018+052538 67 +100 02 27825 03 026A 0433 G 20140423195542682 16 15 1312192+060249 28 +096 01 27825 03 026A 0433 G 20140423195827212 16 15 1315004+055952 18 +094 02 28089 03 053A 0433 G 20140423195542682 16 15 1334399+052614 28 +093 03 28089 03 053A 0433 G 20140423195827212 16 15 1337247+052613 47 28134 03 060A 0433 G 20140423195542682 16 15 1352171+052300 28 +103 01 28134 03 060A 0433 G 20140423195827212 16 15 1355065+052238 47 28445 05 015B 0433 G 20140423183721722 16 15 1102402+073524 68 +113 03 28445 05 015B 0433 G 20140423183804558 16 15 1103130+073451 38 +081 01 28445 05 015B 0433 G 20140423183847424 16 25 1103946+073358 49 +088 34 28445 05 015B 0433 G 20140423184347321 16 25 1107619+072951 28 +100 12 28445 05 015B 0433 G 20140423184430157 16 15 1108121+072725 98 +114 05 28542 05 005A 0433 G 20140423184430157 16 15 1052432+053438 38 +114 01 28885 05 041B 0433 G 20140423195542682 16 15 1325378+052600 28 +102 01 28885 05 041B 0433 G 20140423195827212 16 15 1328228+052558 47 33056 08 030B 0433 G 20140423195542682 16 15 1303018+053132 28 +114 01 33056 08 030B 0433 G 20140423195542682 16 15 1303095+052803 28 +111 01 33056 08 030B 0433 G 20140423195827212 16 15 1305356+053141 18 +114 02 33460 08 065B 0433 G 20140423195542682 16 15 1330152+053118 28 +107 01 33460 08 065B 0433 G 20140423195827212 16 15 1333003+053115 47 34957 97 053A 0433 G 20140423195542682 16 15 1341134+064904 28 +117 01 34957 97 053A 0433 G 20140423195827212 16 15 1343579+064824 28 +123 05 36745 10 032B 0433 G 20140423184430157 16 15 1059375+053139 38 +123 01 37393 11 016B 0433 G 20140423195542682 16 15 1350036+052256 28 +107 01 37393 11 016B 0433 G 20140423195827212 16 15 1352520+052237 47 38014 11 077A 0433 G 20140423195542682 16 15 1305151+052923 28 38014 11 077A 0433 G 20140423195827212 16 15 1307517+052928 87 +107 02 38245 12 016A 0433 G 20140423195542682 16 15 1328129+052251 28 +105 01 38245 12 016A 0433 G 20140423195827212 16 15 1330576+052246 47 +105 01 38741 12 043B 0433 G 20140423184430157 16 15 1102012+053405 38 +108 01 38778 12 051A 0433 G 20140423184430157 16 15 1048545+053024 38 +118 02 39034 12 075A 0433 G 20140423195542682 16 15 1351046+052111 28 +095 01 39034 12 075A 0433 G 20140423195827212 16 15 1353536+052043 87 +091 02 39079 13 006B 0433 G 20140423195542682 16 15 1320582+052833 28 +105 01 39079 13 006B 0433 G 20140423195827212 16 15 1323429+052832 57 +103 01 39285 13 056A 0433 G 20140423184430157 16 15 1049483+052851 38 +114 01 39522 14 007A 0433 G 20140423195542682 16 15 1339130+052831 48 +109 16 39522 14 007A 0433 G 20140423195827212 16 15 1341580+052825 67 +106 02 39617 14 011B 0433 G 20140423195542682 16 15 1310012+052252 28 +102 04 39617 14 011B 0433 G 20140423195827212 16 15 1312419+052249 67 +103 02 NOTES: -------- (1) MERCURY 2 not seen at predicted area so either has increased westward drift rate and is now out of range to me or stopped drifting and is east of where I looked. Will check again eastward tonight if clear. (2) Unknowns seen. I used Scott Campbells program to determine rough elements - and get 1st object: ----------- ofeq object observations 99998 99 998A 0433 G 20140423172354214 55 15 1423598-454506 39 +045 05 99998 99 998A 0433 G 20140423172358214 55 15 1421438-470500 39 +045 05 orbit = 1 99998U 99998A 14113.72497933 0.00000073 00000-0 50000-4 0 04 2 99998 141.8059 47.7419 0008238 269.6700 360.0000 15.21159037 00 Second object: --------------- object observations 99999 99 999B 0433 G 20140423191835643 55 15 0639486-261438 39 +073 05 99999 99 999B 0433 G 20140423192101552 55 15 0630245-554411 39 +080 05 99999 99 999B 0433 G 20140423192312413 55 15 0458225-800543 39 +085 05 orbit = 1 99999U 99999B 14113.80778256 0.00000073 00000-0 50000-4 0 05 2 99999 64.1405 306.2513 0008216 53.8904 180.0000 12.70226631 02 Based on these orbits I plan to do a plane search for each object tonight. Of course a 4 second arc is nowhere near sufficient for an orbit determination but the satellite is bright and Im using a wide field. The second object will not be so easy despite the larger arc on account of the faintness. Of course the drag term is incorrect and Im certain the eccentricity is wrong as the program assumes a circular orbit when only two points are used - something just struck me -- for the second object I have three positions - I only used positions 1 and 3 to get the orbit, so circular, but if I use another of Scotts program - name escapes me at the moment - it may be possible to get all three positions to fit a non-circular orbit ? (just thinking aloud!) Cheers Greg _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Fri Apr 25 2014 - 09:06:36 UTC
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