Optical 22 April 2012

From: Greg Roberts (grr@telkomsa.net)
Date: Mon Apr 23 2012 - 14:56:22 UTC

  • Next message: Marco Langbroek: "SATOBS ML (4353), 22 Apr 2012 (Pt. II): a UNID"

    Observations 22 APRIL 2012
    ------------------------------
    
    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 about 170mm focal length. Field of view 6.2 x 4.7 degrees,
    Images measured manually.
    Time is accurate to within 50 milliseconds.
    
    Site 0433 : Longitude 18.51294 deg East, Latitude -33.94058 deg,
    Elevation 10 metres-situated in Pinelands (Cape Town),South Africa
    
    
    FOR CLASSFD.TLE:
    -------------------------------
    13172 82 041C   0433 F 20120422181906674 55 15 0533340-721138 19
    13172 82 041C   0433 F 20120422181945202 55 15 0257220-745408 19
    13172 82 041C   0433 F 20120422182033761 55 15 0054060-712304 19
    17997 87 043A   0433 F 20120422183136429 55 15 0711455+262129 19
    17997 87 043A   0433 F 20120422183511143 55 15 0746145+055954 19
    17997 87 043A   0433 F 20120422183759506 55 15 0824120-203329 19
    18009 87 043E   0433 F 20120422192821012 55 15 0854498+383118 19
    18009 87 043E   0433 F 20120422192922074 55 15 0906257+344400 19
    18009 87 043E   0433 F 20120422193029865 55 15 0919412+295615 19
    18009 87 043E   0433 F 20120422193052359 55 15 0924190+281041 19
    21799 91 076C   0433 F 20120422173300660 55 15 0159390-581907 19
    21799 91 076C   0433 F 20120422173120762 55 15 0235210-460147 19
    21799 91 076C   0433 F 20120422173013348 55 15 0251580-372737 19
    21808 91 076D   0433 F 20120422173300660 55 15 0203460-560514 19
    21808 91 076D   0433 F 20120422173120762 55 15 0242270-432850 19
    21808 91 076D   0433 F 20120422173013348 55 15 0257050-345724 19
    18010 87 043F   0433 F 20120422193156627 55 15 0905108+333232 19
    18010 87 043F   0433 F 20120422193228810 55 15 0911248+311727 19
    18010 87 043F   0433 F 20120422193323380 55 15 0922156+270534 19
    18025 87 043H   0433 F 20120422184816829 55 15 1032287+414610 19
    18025 87 043H   0433 F 20120422184903134 55 15 1043409+383510 19
    18025 87 043H   0433 F 20120422185002105 55 15 1058350+340803 19
    20344 89 061D   0433 F 20120422193757744 55 15 0816249-273022 19
    20344 89 061D   0433 F 20120422193856720 55 15 0821448-261819 19
    20344 89 061D   0433 F 20120422194025220 55 15 0829327-242851 19
    26905 01 040A   0433 F 20120422175612821 55 15 0234218-453208 19
    26905 01 040A   0433 F 20120422175709785 55 15 0315145-442643 19
    26905 01 040A   0433 F 20120422175831301 55 15 0426371-391755 19
    28054 03 048A   0433 F 20120422174042369 55 15 0455070-410508 19
    28054 03 048A   0433 F 20120422173949512 55 15 0410140-571854 19
    28054 03 048A   0433 F 20120422173844676 55 15 0221480-701649 19
    28537 05 004A   0433 F 20120422190109422 55 15 0539348-394802 19
    28537 05 004A   0433 F 20120422190001060 55 15 0547311-254237 19
    28537 05 004A   0433 F 20120422185908816 55 15 0550088-160028 19
    28541 05 004C   0433 F 20120422190109422 55 15 0542322-382725 19
    28541 05 004C   0433 F 20120422190001060 55 15 0549390-242555 19
    28541 05 004C   0433 F 20120422185908816 55 15 0551536-145009 19
    28637 05 011B   0433 F 20120422182707669 55 15 0458466-084423 19
    28637 05 011B   0433 F 20120422182625672 55 15 0445390-173040 19
    28637 05 011B   0433 F 20120422182511793 55 15 0412338-334814 19
    29658 06 060A   0433 F 20120422180201194 55 15 0436542-775125 19
    29658 06 060A   0433 F 20120422180233530 55 15 0135327-761801 19
    29658 06 060A   0433 F 20120422180302069 55 15 0024019-722004 19
    31702 07 027B   0433 F 20120422180928319 55 15 0556503+145526 19
    31702 07 027B   0433 F 20120422181100948 55 15 0605503-014126 19
    31702 07 027B   0433 F 20120422181320028 55 15 0617415-464910 19
    25336 98 029A   0433 F 20120422180928319 55 15 0602138+143141 19
    32750 08 014A   0433 F 20120422174628213 55 15 1914456-693117 19
    32750 08 014A   0433 F 20120422174631430 55 15 1921141-691904 19
    32750 08 014A   0433 F 20120422174634633 55 15 1927122-690611 19
    32750 08 014A   0433 F 20120422174637850 55 15 1933001-685212 19
    28541 05 004C   0433 F 20120422170502672 55 15 0827002+410023 19
    28537 05 005A   0433 F 20120422170502672 55 15 0826539+402619 19
    37375 11 010A   0433 F 20120422170606566 55 15 0856342+414055 19
    37375 11 010A   0433 F 20120422170626437 55 15 0931282+385118 19
    37375 11 010A   0433 F 20120422170712685 55 15 1054077+290757 19
    37375 11 010A   0433 F 20120422170820970 55 15 1235271+112544 19
    
    UNKNOWN 1:
    --------------------------
    99999 99 999A   0433 F 20120422192839293 55 15 0859040+372244 19
    99999 99 999A   0433 F 20120422192842492 55 15 0901017+372732 19
    99999 99 999A   0433 F 20120422192845712 55 15 0903077+373249 19
    99999 99 999A   0433 F 20120422192848916 55 15 0905195+373839 19
    99999 99 999A   0433 F 20120422192855334 55 15 0908559+374323 19
    99999 99 999A   0433 F 20120422192858553 55 15 0910579+374938 19
    99999 99 999A   0433 F 20120422192901777 55 15 0913043+375418 19
    
    Possible orbit assuming circular:
    1 99999U 99999A   12113.81182612 0.00000073  00000-0  50000-4 0    09
    2 99999  12.7009 243.7066 0007766  91.0054 180.0000 12.82583203    02
    
    
    UNKNOWN 2:
    ----------------------------
    99998 98 888A   0433 F 20120422193108432 55 15 0851242+323908 19
    99998 98 888A   0433 F 20120422193124480 55 15 0851587+323847 19
    99998 98 888A   0433 F 20120422193150198 55 15 0852523+324003 19
    
    Possible orbit assuming circular:
    1 99998U 98888A   12113.81377544 0.00000073  00000-0  50000-4 0    04
    2 99998  21.5677  51.7531 0002220 267.2779 180.0000  1.78606234    08
    
    
    STRAYS SEEN:
    ------------------
    14064 83 044A   0433 F 20120422183115388 55 15 0700410+253223 19  +050 05
    11963 80 073B   0433 F 20120422183511143 55 15 0746085+050303 19  +045 05
    17290 87 001A   0433 F 20120422173104708 55 15 0243280-445552 19  +065 05
    37673 11 024A   0433 F 20120422175721993 55 15 0307470-450913 19  +055 05
    26035 99 070D   0433 F 20120422173917002 55 15 0323040-644435 19  +060 05
    21695 91 062B   0433 F 20120422181018855 55 15 0604050+042226 19  +045 05
    13923 83 022A   0433 F 20120422174947771 55 15 1847400-690203 19  +062 05
    13648 82 109A   0433 F 20120422174602194 55 15 1850000-682834 19  +075 05
    
    NOTES:
    ----------
    (1)Changed Nikon telephoto lens from 200 to about 170mm focus with
       resultant larger field. Happy with performance so will now take it
       to 150 mm.
    
    (2)Much cloud about eventually clouding me out completely.
    
    (3)UNKNOWN 1 is real - slightly variable. Difficult to estimate magnitude
       as it was crossing the field of view whilst tracking on another
       satellite so impossible to guess how much integrated magnitude.  If I had
       to guess probably around mag +8 at max.
    
    (4)UNKNOWN 2 I am not confident about - this may be an internal reflection
       inside the telephoto lens but did appear to display some variability.
       About mag +6. Used Scott Campbell's ELFIND for the possible orbits.
    
    Cheers
    Greg
    
    _______________________________________________
    Seesat-l mailing list
    http://mailman.satobs.org/mailman/listinfo/seesat-l
    



    This archive was generated by hypermail 2b29 : Mon Apr 23 2012 - 14:53:41 UTC