Optical 25 Oct 2011

From: Greg Roberts (grr@telkomsa.net)
Date: Wed Oct 26 2011 - 12:42:30 UTC

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    Observations 25 Oct 2011
    --------------------------------
    
    Cosatrak 1 (Computerised satellite Tracking System).
    Camera mount now carries two systems that can be operated
    together as two totally different sytems and computers used.
    Generally the DSI Pro II camera will be used for high altitude
    slow moving objects. Tests seem to indicate that its sensitivity
    is comparable to the MINTRON ( possibly better) but as its not
    possible (?) to time stamp to better than 1 second accuracy the
    time resolution is not good enough for LEO objects.
    
    MINTRON low light level CCD surveillance camera (0.005
    lux typical in non integration mode) and 0.00005 lux in STARLIGHT
    mode with 128 frame integration.)
    Used with ~100mm focal length f/2.8 lens,integrating for 128 fields
    which is equivalent to a max exposure of 2.56 seconds maximum
    per image, but dependent on sky brightness. Field of view
    4.2 x 3.1 degrees.
    Individual frames are video time stamped with GPS derived signal.
    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 CLASSIFIED.TLE:
    ---------------------------
    19460 88 078A   0433 G 20111025184928400 56 15 2229552-114853 39  +040 05
    19460 88 078A   0433 G 20111025184930600 56 15 2230040-104804 39  +040 05
    19460 88 078A   0433 G 20111025184932700 56 15 2230108-094637 39  +040 05
    19460 88 078A   0433 G 20111025184934900 56 15 2230189-084529 39  +040 05
    29249 06 027A   0433 G 20111025210028000 56 15 2345050-163733 39  +055 05
    29249 06 027A   0433 G 20111025210057000 56 15 2348410-183434 39  +055 05
    29249 06 027A   0433 G 20111025210119000 56 15 2351380-200745 39  +055 05
    29249 06 027A   0433 G 20111025210141000 56 15 2354490-214215 39  +055 05
    90070 06 829A   0433 G 20111025200720500 56 15 2323359-172749 39  +045 05
    90070 06 829A   0433 G 20111025200743600 56 15 2331236-173642 39  +045 05
    90070 06 829A   0433 G 20111025200814000 56 15 2341179-174618 39  +050 05
    90070 06 829A   0433 G 20111025233145900 56 15 2200052-114948 39  +075 05
    90070 06 829A   0433 G 20111025233333400 56 15 2221004-123002 39  +075 05
    90070 06 829A   0433 G 20111025233635100 56 15 2255307-131113 39  +070 05
    90070 06 829A   0433 G 20111025234010100 56 15 2334017-132551 39  +065 05
    90070 06 829A   0433 G 20111025234507200 56 15 0022178-125106 39  +065 05
    90070 06 829A   0433 G 20111025234849900 56 15 0054375-115421 39  +060 05
    90070 06 829A   0433 G 20111025235159300 56 15 0119366-105308 39  +060 05
    90070 06 829A   0433 G 20111025235620500 56 15 0150447-091239 39  +060 05
    90070 06 829A   0433 G 20111026000000600 56 15 0214210-073907 39  +060 05
    90070 06 829A   0433 G 20111026000341100 56 15 0235525-060033 39  +060 05
    
    UNKNOWN:
    ----------------
    99999 99 999A   0433 G 20111025201448500 56 15 2339525-152247 39  +070 05
    99999 99 999A   0433 G 20111025201451100 56 15 2340531-154825 39  +070 05
    99999 99 999A   0433 G 20111025201456300 56 15 2342561-163558 39  +070 05
    99999 99 999A   0433 G 20111025201503900 56 15 2346153-175216 39  +070 05
    
    
    NOTES:
    ---------
    (1) This is the result of a 6.5 hour long orbit plane scan for 90070
        during which time it was observed on two passes. This was necessary
        as 90070 had been lost for 160 days but orbital period very uncertain
        due to high drag as a result of very low perigee of about 167 kms.
        (apogee about 9762 kms, orbital period 200.28 minutes). Many thanks
        to Mike McCants for all his invaluable aid in this session. This one
        will have to be tracked more frequently otherwise we will loose it,
        despite it being a bright object.
    
    (2) Two other classified satellites happened to cross the plane scan,
        being #19460 USA 32 ( very pretty, complex flash pattern- approx
        10 per 2 seconds but irregular) and USA 184 #29249 - steady.
    
    (3) Unknown - no match in my element database. Assuming a circular orbit
        these are rough parameters:
        inc 61.1 deg, RA Node 156.8 deg, height 1990 kms, std mag 6.5
        probably a Molniya type object in eccentric orbit ?
    
    (4) Approx 3300 FITS images were secured but I dont propose to measure
        all the known identified satellites seen !
    
    Cheers
    Greg 
    
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