Rosetta positions 4 March 2005

From: Greg Roberts (grr@iafrica.com)
Date: Thu Mar 17 2005 - 04:34:26 EST

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    Observations 04 March 2005
    ---------------------------------
    Cosatrak 1 (Computerised satellite Tracking System).
    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. Due to bright sky it is not worthwhile integrating
    more than 48 frames which is equivalent to an exposure of 0.96 seconds.
    
    Used with 145mm focal length f/2.5 lens giving a field of view of
    about 2.55 x 1.86 degrees and easily showing 12th magnitude stars.
    Not the best lens optically but the most useful in terms of field
    of view and magnitude penetration.
    
    Data recorded on DVD R/W disks - will be kept for 1 month and then
    re-used - just in case any queries as Im always making mistakes!
    
    Site 0433 : Longitude 18.51294 deg East, Latitude  33.94058 deg S,
    Elevation 10 metres - situated in Pinelands (Cape Town), South Africa
    
    Observations of ROSETTA flyby:
    ---------------------------------------
    
    28169 04 006A   0433 G 20050304200322500 17 15 1006166+203207 39
    28169 04 006A   0433 G 20050304201000200 17 15 1003463+210809 39
    28169 04 006A   0433 G 20050304201459800 17 15 1000500+215022 39
    28169 04 006A   0433 G 20050304202000000 17 15 0957352+223514 39
    28169 04 006A   0433 G 20050304202500100 17 15 0954006+232324 39
    28169 04 006A   0433 G 20050304202959600 17 15 0950070+241706 39
    28169 04 006A   0433 G 20050304203459100 17 15 0945434+251409 39
    28169 04 006A   0433 G 20050304204000000 17 15 0940513+261739 39
    28169 04 006A   0433 G 20050304204459500 17 15 0935225+272710 39
    28169 04 006A   0433 G 20050304205000300 17 15 0929058+284407 39
    28169 04 006A   0433 G 20050304205459800 17 15 0922007+300800 39
    28169 04 006A   0433 G 20050304210000100 17 15 0913442+314228 39
    28169 04 006A   0433 G 20050304210458800 17 15 0904059+332659 39
    
    Notes:
    ------
    (1) Ive had a request to measure some positions from the DVD recording
        made of the flyby pass of ROSETTA observed at my location. Now
        that the spacecraft is safely on its way my observations cannot be
        used since it would have sent the spacecraft off-course :-))
        Magnitude at the start of pass was about 12 and distance approximately
        45000 kilometres. When observations were terminated at 21h04m ( due
        to a neighbours tree), the magnitude had brightened to about +9 and
        the distance decreased to about 24000 kilometres.
    
    Cheers
    Greg
    
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